When making an interpretation of a past event, a historian:

a. offers an opinion about the event based on evidence and his or her own point of view.

b. analyzes existing studies related to the event to determine if they are biased.

c. separates the event from the political, economic, and social context surrounding it.

d. refutes counter arguments that might weaken his or her argument about the event.

B. Analyzes existing studies related to the event to determine if they are biased.

answer: choose the second bullet point. it is the easiest to put together an answer to the question.

explanation:

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.