Question

the illustration shows a step in a construction. which construction could it be when completed? a a copy of $overline{ef}$ b a trisector of $overline{ef}$ c a bisector of $overline{ef}$

Explanation:

The compass is set to a length based on segment EF. This is a common first - step in constructing a copy of a line segment. To construct a trisection or a bisector, more steps and different techniques are involved. Here, the compass is simply measuring the length of EF to create an equal - length segment elsewhere.

Answer:

A. a copy of $\overline{EF}$