Answer:
That statement is True
Explanation:
Primary sources is a source of information that directly created by the people who were involved in the past events.
For example, when we're studying civil war, Letters that directly written by lincoln or the Papers that were written by journalist who witnessed the war would be considered as a primary source.
Susan Solomon's article about climate change on the web of science was based on her direct involvement in the researches, which is why it's considered as a primary source.
