Which of the following are terms in this expression? Select all that apply.

In the expression \( 5k^2 + n^2 + m^2 \), the terms are the individual components that are added together. The terms in this expression are:

1. \( 5k^2 \)
2. \( n^2 \)
3. \( m^2 \)

So, all three of these are terms in the expression.