Question

1. ab≅bc 1. given 2. bc≅ef 2. given 3. ab≅ef 3. transitive prop. 4. ab = ef 4. def. of ≅ segs. 5. eg = ef + fg 5. seg. addition 6. eg = ab + fg 6. substitution

it is part of the given information.
it is part of the argument.
it is the conclusion.
it is an assumption.

Explanation:

The statement "EG = AB + FG" is derived from previous statements through substitution. It is the final result of the logical - reasoning process based on the given equalities of line - segments and segment addition postulate. So it is the conclusion of the argument.

Answer:

It is the conclusion.