Rearrange the parts of the sentence in correct order.

P. American political economist Mancur Olson, who wrote in 1965

Q. the problems of collective action were popularized by the

R. that coercion or some other device must be present in order

S. for a group of individuals to act in their common interest

QPRS

The correct answer is Option (3) - QPRS

The correct order of the jumbled sentences is QPRS.

The sentence is about how the problems of collective action were popularized by the American political economist Mancur Olson, who wrote in 1965 that coercion or some other device must be present in order for a group of individuals to act in their common interest.

Here is the explanation:

• Q is the subject of the sentence, which is the problems of collective action.
• P is the modifier of the subject, which describes the problems as being popularized by the American political economist Mancur Olson.
• R is the verb, which means to write.
• S is the object of the prepositional phrase, which is their common interest.