What property is this?

(n + 13) + 4 = n + (13 + 4)

Pick the answer that is an example of the distributive property:

Which correctly applies the associative property to the expression

$$\left(x+5\right)+7$$  

This is an example of which property:

(2 ⋅ 3) 4 = 2 (3 ⋅ 4)

This is an example of which property:

(2 ⋅ 3) 4 = (3 ⋅ 2) 4

Which property says changing the order of the terms in addition or multiplication will not change the result?

2 (x - y) = 2x - 2y

Which is an example of the distributive property?