18. What change, if any, should be made in sentence 32?

A. Change seperate to separate
B. Delete the comma
C. Change feel to fell
D. No change should be made in this sentence.

5. the following question refers to the four selections by albert einstein: these readings show that, between 1939 and 1952, einstein a) abandoned science and turned to political activism. b) revised his opinions about the need for nuclear weapons. c) worked tirelessly to abolish nuclear weapons. d) devoted himself solely to scientific research.