Question

question #1
why are functions useful in programming?
they help us do simple mathematical calculations.
they allow us to create new variables.
they save us time by allowing us to reuse code.
they automatically get rid of any errors in our code.

Explanation:

Functions in programming allow code reuse, which saves time. They encapsulate a set of instructions that can be called multiple times without rewriting the code. This modularity simplifies code maintenance and development.

Answer:

They save us time by allowing us to reuse code.