The correct answer is C. PRSQ.
P: He was so kind and generous
Q: that he not only
R: made others do so
S: but also helped them himself
The sentence is about a man who is so kind and generous that he not only helps others, but also makes others help others. The correct sequence of the clauses is PRSQ, as follows:
- He was so kind and generous.
- That he not only helped others.
- But also made others do so.
The first clause, “He was so kind and generous,” establishes the man’s character. The second clause, “That he not only helped others,” describes one of his actions. The third clause, “But also made others do so,” describes another of his actions.
The sentence is grammatically correct and makes sense in the order PRSQ. The other options are incorrect because they do not follow the correct order of the clauses.