Just double checking my answers can someone help me out A or B? Thank you.

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

Will mark brainlist what is the slope of the line passing through the points (-2, -8) and (-3,-9)? -7/5-5/71-1

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)