Which of the following is the definition of "replace"?

The definition of "replace" is accurately captured by the choice that indicates substituting one item for another. This means taking something out and putting something else in its place, which aligns perfectly with the core meaning of "replace."

When deciding on the correct answer, it is essential to recognize that "replace" conveys the action of one thing being exchanged for another, which can occur in various contexts, such as when changing a part in a machine, switching out a product, or even in social situations where one person might take the place of another.

The other choices revolve around different actions that do not precisely define "replace." Some refer to promoting, expanding, or transforming, which involve growth or modification rather than the direct act of substitution inherent in the term "replace." This distinction clarifies why the selected answer is the most fitting definition for the word in question.