How can historians use photographs?

Photographs are very useful types of primary sources. They provide a rare glimpse of a particular second in time, which will never again be repeated. ... Many people assume that photographs are unbiased, accurate records of historical events. However, that is not always the case.

Explanation:

answer; /// the answer to the first question is (b) it began when people first deliberately seeds; /// and (d); // it gave people a steady food supple for the first time;