<prompt> The following gram stain shows which bacteria?Streptococcus pneumoniaStaphylococcus aureusListeria monocytogenesVibrio cholera  <response>: Ans. d Vibrio cholera. The following picture shows presence of Vibrio cholera in gram Stain. Notice that the Long arrow points to a curved gram-negative rod. Arrowhead points to a flagellum at one end of a curved gram-negative rod.Image source- stylefont-family: Times New Roman, Times, serif 