A. (3 x 5) + (3 x 8)
Step-by-step explanation:
The Distributive property distributes the common factor that the numbers in the parenthesis are multiplied with.
Ex. A(B + C) will equal (A x B) + (A x C).
3 x (5 + 8) will equal (3 x 5) + (3 x 8).