The answer is C.
The expression is telling you to multiply the parenthesis times four. When you multply two numbers, [tex] a \times b [/tex], it means that you're considering [tex] a [/tex] "copies" of [tex] b [/tex], or if you prefer, [tex] b [/tex] repeated [tex] a [/tex] times.
So, you have
[tex] 2 \times (1.351 - 381) [/tex] <- this is twice as much as the parenthesis
[tex] 3 \times (1.351 - 381) [/tex] <- this is three times as much as the parenthesis
[tex] 4 \times (1.351 - 381) [/tex] <- this is four times as much as the parenthesis
