Each of the following questions consists of six sentences of a passage. The first and sixth sentences are given as S1 and S6. The middle four sentences in each have been jumbled up and labeled as P, Q, R, and S. Find the proper sequence of the four sentences and mark your response accordingly.

S1: Microplastics are plastic particles that are 5 millimeters or less in size.

P: Some forms of plastic are even a million times smaller than a millimeter: these are nano plastics. 

Q: Microplastics have been found everywhere in our environment, from the deepest ocean trenches to both poles, and on top of the Himalayas. 

R: However, microplastics can also be found much closer to home. 

S: As microplastics are released from our sofas, carpets, curtains, and other synthetic textiles, they are omnipresent in virtually every household.

S6: Microplastics have also been found in many consumer products such as seafood, honey, beer, water, salt, fruits, and vegetables.