A triangle can have:
Answer: C
The sum of angles in a triangle is 180°.
Two right angles (90°+90°=180°) would leave 0° for the third angle, which is not possible.
Two obtuse angles (each >90°) would make the sum exceed 180°, which is not possible.
A triangle can always have two acute angles (e.g., in a right-angled triangle or an obtuse-angled triangle). In fact, every triangle must have at least two acute angles.