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Understanding meaning

Substitution comes from the word substitute which means using one thing instead of another thing.

For example:

Carob is a fruit which tastes a lot like chocolate. The substitution of carob in place of chocolate reduces the calories in cookies.

Which answers below are closest in meaning to substitution? Choose the 3 correct answers.

something you use instead of another thing

an alternative choice

an addition to something

a replacement for something or somebody