Answer:

Option B is the correct option.
Explanation:
Given, m = -2 and n = -3
Given expression : 3m - 4n
If the value of variables of algebraic expressions are given, the value of the term it expression can easily obtained by replacing the variables with numbers.
Let's solve:

Plug the values of m and n

Multiply

When there is a ( - ) in front of a parentheses, change the sign

Calculate

Hope I helped!
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