16°
10°
20°
None of these
Answer is Right!
Answer is Wrong!
The correct answer is: A. 16°
The minimum radius for curves in BG is 16°. This means that the radius of any curve in BG must be at least 16°. If the radius of a curve is less than 16°, then the train will not be able to make the turn and will derail.
The other options are incorrect because they are not the minimum radius for curves in BG. Option B, 10°, is too small. Option C, 20°, is too large. Option D, None of these, is incorrect because there is a minimum radius for curves in BG.