Ghf is congruent to khj, what can you conclude?

The answer is a. Because because congruent angles are equal. if they are equal and start at the center of a circle this means that they can only travel the same distance before hitting border of circle. this would make their arcs the same

A is correct.

By the corresponding congruent triangles, the segments and arc's henceforth must be congruent.

Hope that helps!

:D®