Answer:
2a, 3b and -4c are examples of terms.
Explanation:
Given : Expression

To find : 2a, 3b and -4c are examples of ?
Solution :
We have given the expression

A term is made up of a constant multiplied by a variable.
In the given expression,
Variables are a, b and c.
Constant are 2,3 and -4.
So, 2a, 3b and -4c will make a term.
Therefore, 2a, 3b and -4c are examples of terms.