The correct answer is: A. returns a new list that is equal to by copying the top-level element of
.
The function (copy-list ) takes a list as input and returns a new list that is equal to the input list. The new list is created by copying the top-level element of the input list. For example, if the input list is (1 2 3), the output list will be (1 2 3).
The other options are incorrect. Option B returns the length of the input list, not a new list that is equal to the input list. Option C returns t if the input list is empty, not a new list that is equal to the input list. Option D is incorrect because it includes options B and C, which are incorrect.