Answer:
B. 67°
Step-by-step explanation:
An acute angle is an angle that has a degree that's less than 90°. This eliminates answers "C," and "D."
The information above states that the triangle is right, meaning that one of its angles is 90°, and there's another angle that's 23°.
So add these together, and subtract from 180 (all triangles are 180°), to get the other acute angle:
90 + 23 = 113
180 - 113 = 67°
The missing acute angle is 67°
