Correct Answer - Option 4 : D
Given,
Statement:
1. Nobody else but only the poor can spend on rickshaws.
2. Some people travelling by rickshaw become ill.
3. Some of those who become ill require treatment.
Conclusions:
A. All poor people travel by rickshaw → False
B. People who travel by rickshaw become ill → False
C. All poor people become ill → False
D. All those who travel by rickshaw are poor → True
Here we see only conclusion D is correct.
Hence the correct answer is D. All those who travel by rickshaw are poor.