Rearrange the parts of the sentence in correct order.

American alligators were
P. now this species is classified as least concern
Q. list in 1967, their population increased and
R. once threatened by extinction but
S. after being placed on the endangered species

The correct answer is 'RSQP'.

Key Points

• Sentence R will be first sentence of the sequence because it is the correct extension of the fixed sentence i.e. "American alligators were once threatened by extinction but". 
• Sentence S will come after R because it mentions that it was then placed in the endangered species list.
• Sentence Q will come after S because it tells after placing them in the endangered species list, there was a change in population.
• The sentence 'P' is the concluding part because it mentions that now they have been classified as least concern.
• Hence, 'P' marks the last part.
   

Therefore, the correct order of the sentence will be: American alligators were once threatened by extinction but after being placed on the endangered species list in 1967, their population increased and now this species is classified as least concern.

Important Points

• Important Rules to Solve the Sentence Jumbles:
  • Read the sentences attentively and try to comprehend the idea or theme of the sentences.
  • Try to identify the opening and closing sentences.
  • Try to identify the mandatory pairs. Two sentences can be connected through various connectors and other determinants.