At several points in the passage, the author describes how Donna hurts herself. At one point,
for example, she hits her leg on the car's fender.
Reread the text that describes each of these
details. What inference can you make about
Donna from this text evidence? How does
Stephen King use these incidents to build
suspense? Highlight your evidence and annotate
to explain your ideas.

The sentences that contain gerunds are:

3. Thinking is hard when you are under pressure.

4. Junior got a timeout for running in the halls.

Explanation:

A gerund is formed by adding -ing to the base form of a verb. For that reason, it looks exactly like a present participle. Examples: swimming, singing, eating, thinking, etc.

However, in a sentence, gerunds function just like nouns, which means they play the same roles nouns do in the sentence such as subject, direct or indirect object, and complement.

With that in mind, we can eliminate the first two options, which contain a present participle functioning as an adjective and as part of a progressive tense. The last two options contain gerunds functioning as nouns. They are the ones we should pick.