Use the text "A World Thirsty for Clean Water"

which type of account is this text, and how can a reader tell?
a. It is firsthand because it gives details about a big idea.
b. It is secondhand because it gives big-picture ideas that are supported by key facts.
c. It is secondhand because the author only gives a few details about the topic.
d. It is firsthand because it shows the opinions and feelings of the author.

b. It is secondhand because it gives big-picture ideas that are supported by key facts.

A reader can infer this because the text presents a general idea, "A World Thirsty for Clean Water," which suggests that it is not based on the author's personal experiences or emotions. Additionally, the use of key facts to support the big picture idea further indicates that it is a secondhand account.