Question

select the word or phrase that is redundant and can be removed without changing the meaning of the text. to learn astrophysics, you should start with the basic fundamentals.

Explanation:

"Fundamentals" already refers to basic core principles, so the adjective "basic" repeats this meaning and is unnecessary. Removing it leaves the sentence's meaning intact: "To learn astrophysics, you should start with the fundamentals."

Answer:

"basic"