10
7
9
4
Answer is Right!
Answer is Wrong!
The correct answer is D. 4.
A 4 HP motor trolly is a type of vehicle that is used to transport people and goods. It is powered by a 4 horsepower engine, which means that it can carry a maximum of 4 people, including the trollyman.
The other options are incorrect because they are either too high or too low. Option A, 10, is too high because a 4 HP motor trolly cannot carry that many people. Option B, 7, is too low because a 4 HP motor trolly can carry at least 4 people. Option C, 9, is also too low because a 4 HP motor trolly can carry at least 4 people.
Therefore, the correct answer is D. 4.