The table shows the proof of tye relationships between the slopes of two perpendicular lines. What is the missing statement in step 5

When are triangles considered similar? a. corresponding angles are equal andcorresponding sides are proportionalb. corresponding angles are proportional andcorresponding sides are equalc. corresponding angles are equal orcorresponding sides are proportionald. corresponding angles are proportional orcorresponding sides are equal select the best answer from the choices providedmark this and retumsave and exitnext

Precalculus question, image attached.

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6