as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
design a quiz question with a chosen difficulty of "hard".
user
which of the following elements are found in a group 16 element?
(a) oxygen 
(b) lead 
(c) selenium 
(d) chlorine

answer: c selenium.
assistant