Select the most appropriate option that can substitute the highlighted segment in the given sentence. If there is no need to substitute it, select 'No substitution'.
He was so curious that he rose many questions in the meeting.

Correct option is A

The correct substitution is "that he raised many questions".
Original Sentence: The phrase "he rose many questions" is incorrect because "rose" is the past tense of "rise," which means to move upwards or to increase, but it is not used in the context of posing questions.
Correct sentence: Option (a): "that he raised many questions" is correct.
The verb "raise" means to bring up or to mention something, such as a question or a topic. This fits the context perfectly.
Other Options:
 Option (b): "that he rose much questions" is incorrect because "rose" is wrong here and "much questions" is grammatically incorrect; it should be "many questions" because "questions" is a countable noun.
 Option (c): "that he aroused many questions" is also incorrect. While "arouse" means to evoke or awaken a feeling, interest, or response, it is not commonly used with "questions" in this context. The correct collocation is "raise questions."
 Option (d): "No substitution" is incorrect because the original phrase "he rose many questions" is grammatically incorrect and needs correction.
Therefore, the most appropriate substitution is option (a) "that he raised many questions."