How did the seven hills contribute to Rome's development?

A. They offered protection from enemies,

B. They helped unify Rome into one community

C. They provided rich farmland for growing crops

D. They had wood for constructing buildings and bridges,

THE ANSWER IS A

Step-by-step explanation:

In the text i listened and the plains are what provided rich soil for crops, the hills protected them from enemy attack and were a rather hard way to travel. due to this and making it easier instead of travelling over the sea, they made roads as well as bridges. If you do not think this is right you could tell me why, im all ears.

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8