The correct answer is Before sentence 2
Step-by-step explanation:
The quotation "The influence of the Olympians on everyday culture is equal to that of Shakespeare..." focuses on explaining, in general, the influence of Greek mythology, which is the main thesis of the student. In this context, it is recommended to add this sentence before the specific examples such as "the US space program, for instance, is called Apollo..." because the quotation is general rather than specific and would help this student to support the general statement before adding the specific examples. According to this, the quotation should be added before sentence 2.