Some parts of a sentence have been jumbled up, and labelled P, Q, R and S. Select the option that gives the correct sequence in which these parts can be rearranged to form a meaningful and grammatically correct sentence.
While I was inside
P. struggling with maths and
Q. chemistry, my father was constructing a
R. the classroom in Cambodia,
S. temporary scaffolding on the campus grounds.

Correct option is C

Option (c) is the correct order of the given sentences.
Explanation of correct sequence (RPQS):
Let’s construct the sentence:
· R. the classroom in Cambodia,
· P. struggling with maths and
· Q. chemistry, my father was constructing a
· S. temporary scaffolding on the campus grounds.
Rearranged sentence:
While I was inside the classroom in Cambodia, struggling with maths and chemistry, my father was constructing a temporary scaffolding on the campus grounds.
Why this order is correct:
· Starts with location (R)
· Continues with student’s activity (P)
· Adds second subject and verb (Q)
· Concludes with object of construction (S)
Other options break either the chronological order or the grammatical pairing of subject–verb–object.