Answer:
C. ∠ABC = 61°, ∠BAC = 61°
Step-by-step explanation:
The remaining two angles must be equal. C is the only choice showing equal angles.
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As a check, the angles must add to 180°, so you have ...
... 2∠A + 58° = 180°
... ∠A + 29° = 90° . . . . . . divide by 2
... ∠A = 61° = ∠B . . . . . . . matches choice C
