On a piece of paper, use a protractor to construct right triangle def with de=4 in. , m∠d=90° , and m∠e=45° .

Let's see    ..  . .

D

E                        F

Since one of the angle is 90 degree, it would be very likely that the other side could be paired with the principle of Pythagoras.
The Pythagoras match for 4 is 3 and 5, so

DE = 4 in
EF  = 3 in
Df = 5 in

The answer would be d i think but i’m for sure it is not a and c

Iam pretty sure its a sorry if im wrong