What is the degree measure of s?
A) 106°
B) 122°
C) 131°
D) 151°

D) 151°

Step-by-step explanation:

First we recall the fact that angles in a triangle add to 180°

So this means that we can find the angle above 's'

61° + 90° + ? = 180°

151° + ? = 180°

? = 29°

So the angles above 's' is 29°

Then we recall the fact that angles on a straight line add to 180°

So this means that

s + 29° = 180°

s = 151°