A) 14 + 77 = 91 - it's the sum
B) 14 × 77 = 77 × 14 - it's a commutative property a × b = b × a
C) 14 + 77 = 7(2 + 11) - it's a distributive property a(b + c) = ab + ac
D) (2 + 11)7 = 7(2 + 11) - it's a commutative property a × b = b × a
Answer: C) 14 + 77 = 7(2 + 11)