The following question consists of an incomplete sentence or a sentence split into four parts. All four parts are jumbled up and are named P, Q, R, and S. These four parts are not given in their proper order. Arrange the jumbled parts of the sentence and find out which of the four combinations from the given options will correctly complete the sentence.

Studies _________________are inextricably linked.

P: indicate that apples,

Q: and berries, not only keep you healthy 

R: along with bananas, citrus fruits,

S: but also keep you happy because food and mood .