A study of guppy fish shows that a male guppy will alter its courting patterns in response to feedback from a female guppy. Males with more orange on one side than the other were free to vary which side they showed to a female. Females were drawn to those males with more orange showing, and males tended to show the females their more orange side when courting.
Which one of the following, if true, provides the most support for the argument?
(A) When a model of a female guppy was substituted for the female guppy, male guppies still courted, but
were not more likely to show their side with more orange. - CORRECT. Here, males stopped to respond as they stopped getting feedback from females which were just models. No feedback from females no response from males.
(B) In
many other species females show a preference for
symmetry of coloring rather than quantity of coloring. - WRONG. Two things goes against this option.
(C) No studies have been done on whether male guppies with more orange coloring
father more offspring than those with less orange coloring. - WRONG. Goes offtrack. There is no relation between what is discussed here and what passage is concerned about.
(D) Female guppies
have little if any orange coloring on their sides. - WRONG. Irrelevant.
(E) The male and female guppies were kept in separate tanks so
they could see each other but not otherwise directly interact. - WRONG. Were males still able to respond to feedback while seeing females? We aren't sure as we need to make further assumptions either to support or weaken.
Answer A.