P : Finish specialists recommended a chewing gum containing xylitol-a natural sweetener present in birch, maple, corn and straw-to be used several times a day by young children.
Q : Chewing gum is a new solution that "may work for parents whose chidren suffer from chronic eat infections.
R : An experiment was conducted involving three hundred and six children between two and six years.
S : After Finish studies showed that xylitol is effective in preventing cavities, a team of researchers decided to investigate its effects on a very similar type of bacteria which causes ear infections.

Options

A. Q R S P
B. P Q R S
C. R Q P S
D. Q P S R

Answer

D

Explanation

Q is the opening sentence, it introduces the subject. This will be followed by P which has a link with Q- Chewing gum, then will be S which has a link with P-Finish.