Which statement is a main idea of Chapter 4?

In Katherine's early years at NASA, a Soviet astronaut becomes the first person to orbit the Earth.

Katherine plays an important role in the Apollo 11 flight to the moon that places America ahead in the space race.

Katherine believes in teamwork and makes sure others are given credit for their contributions.

Katherine has concerns that her calculations might be incorrect and cause problems for the return flight of Apollo 11.

The statement that is the main idea of Chapter 4 is A. In Katherine's early years at NASA, a Soviet astronaut becomes the first person to orbit the Earth.

The main idea in a literary work is also known as the theme or the central idea. It's simply the message that the author wants to convey to the audience.

Based on the article, it can be inferred that in Katherine's early years at NASA, a Soviet astronaut becomes the first person to orbit the Earth. This was an important innovation and was the main idea.

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