Question

react (verb)
react rē-akt
\iron in the metal reacts with oxygen in the air, forming a third substance that we call rust.\
read the quote. what is the meaning of react as it is used in this context?
a to change the temperature
b to remove a part of something
c to separate using force
d to chemically interact or combine

Explanation:

To determine the meaning of "react" in the context, we analyze the sentence: "Iron in the metal reacts with oxygen in the air, forming a third substance that we call rust." Rust forms when iron and oxygen interact chemically. Option A is incorrect as the sentence doesn't mention temperature change. Option B is wrong because it's about combining, not removing a part. Option C is incorrect as there's no force - based separation. Option D, "to chemically interact or combine", matches the process of iron and oxygen forming rust.

Answer:

D. to chemically interact or combine