What is the first step in constructing an angle bisector of A?

Place compass point on the vertex of the angle (point B).

Stretch the compass to any length that will stay ON the angle.

Swing an arc so the pencil crosses both sides (rays) of the given angle.

Place the compass point on one of these new intersection points on the sides of the angle.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.