Kathleen Baker is the current world-record holder in the 4x100 metre medley relay along with an American compedition swimmer who qualified for what in 2016?
Rio Olympics
Kathleen Baker
Kathleen Baker (born February 28, 1997) is an American competition swimmer who specializes in freestyle and backstroke events.
 At the 2016 Summer Olympics, she won a gold medal in the 4x100-meter medley relay and a silver medal in the individual 100-meter backstroke.
 She is the current world-record holder in the 4x100 metre medley relay, with Lilly King, Kelsi Worrell, and Simone Manuel.
Kelsi Worrell
Kelsi Worrell (born July 15, 1994) is an American competition swimmer who specializes in butterfly and freestyle events.
 She qualified for the 2016 Rio Olympics in the 100-meter butterfly and won a gold medal in the 4 x 100-meter medley relay for swimming in the heats.
Alexandra Jackson
Alexandra Elizabeth Jackson (born 10 June 1952) is an Irish-British former competitive swimmer who won a bronze medal in the women's 100-metre freestyle at the 1970 European Aquatics Championships.
 She competed for Great Britain at the 1968 Summer Olympics in Mexico City, in the 100- and 200-metre freestyle, and the 4×100-metre freestyle and 4×100-metre medley relay events; her best achievement were sixth places in the 100-metre freestyle and 4×100-metre medley relay.In the medley relay she competed with Margaret Auton, Wendy Burrell and Dorothy Harrison. Dorothy Harrison
Dorothy Elizabeth Harrison (born 16 March 1950) is an English former competitive swimmer who represented Great Britain in the Olympic Games and European championships.
 She won a bronze medal in the 200-metre breaststroke at the 1970 European Aquatics Championships.
 She competed in five breaststroke and medley relay events at the 1968 and 1972 Summer Olympics; her best achievements were sixth place in the 4×100-metre medley relay in 1968 and eighth place in the 100-metre breaststroke in 1972.
 In the medley relay she competed with Margaret Auton, Wendy Burrell and Alexandra Jackson. Rosemary Lassig
Rosemary Lassig (born 10 August 1941), known after marriage as Rosemary Lluka, was an Australian breaststroke swimmer of the 1960s, who won a silver medal in the 4×100-metre medley relay at the 1960 Summer Olympics in Rome.
 Lassig combined with Dawn Fraser, Jan Andrew and Marilyn Wilson to register a silver medal in the 4×100-metre medley relay, trailing the Americans home by five seconds.
 In her only individual event, the 200-metre breaststroke, she did not advanced beyond the preliminary heats. Audrey Lacroix
Audrey Lacroix (born November 17, 1983) is a retired Canadian competitive swimmer from Montreal, Quebec.
 She is the Canadian record-holder in the 200-metre butterfly (short-course and long-course).
 She is a former world record-holder in the short-course 4x100-metre medley relay along with teammates Katy Murdoch, Annamay Pierse and Victoria Poon.
 She was a member of the Canadian team that finished 8th in the 4x100-metre freestyle relay and in 7th place in the 4x100-metre medley relay at the 2008 Summer Olympics.
 She won the gold medal in 200-metre butterfly at the 2014 Commonwealth Games.
 and a bronze in the women's 4x100-metre medley relay.
 She also swam in the 100-metre butterfly final, finishing seventh with a time of 58.78. Swimming at the 2006 Central American and Caribbean Games – Men's 4x100 metre medley relay
Swimming at the 2006 Central American and Caribbean Games – Men's 4x100 metre medley relay Swimming at the 2006 Central American and Caribbean Games – Women's 4x100 metre medley relay
Swimming at the 2006 Central American and Caribbean Games – Women's 4x100 metre medley relay Ali DeLoof
Ali DeLoof is an American swimmer specializing in backstroke.
 She is the world record holder in the 4×50 m medley relay.
 During the 2016 FINA Short Course Worlds in Windsor, Canada, she won gold medals in the 4x50 and 4x100 metres medley relays, and won a gold medal as a prelim swimmer in the 4x100 metres freestyle relay.
 She also won bronze in the 50 metres backstroke, and placed sixth in the 100 metres backstroke. Camille Cheng
She qualified to the 2016 Summer Olympics in Rio de Janeiro, and was selected to represent Hong Kong in the women's 50 metre freestyle, 100 metre freestyle, 200 metre freestyle, and 4x100 metre medley relay.