Q:

Rearrange the parts of the sentence in correct order.
 We have been
 P. able to identify certain patterns in
 Q. the microbiome and immune response
 R. that are clearly linked to the progression and
 S. severity of brain injury

• 1
  PQSR
• 2
  QPSR
• 3
  RSPQ
• 4
  PQRS