Question

Her gaze was a laser to his heart
this metaphor means that
a-grandmother was trying to scare him
b-grandmothers stare made him feel guilty
c-grandmothers look gave him a heartburn
d-grandmother stared directly at his chest

1-c or d

Answer 1

I don't think either c or d is correct. You're looking for the meaning of this metaphor.

Answer 2

Yes, b is the best answer.

Answer 3

doesnt c give a meaning to rather than d