In the following question, a sentence is divided into four parts (P,Q,R,S). Rearrange it in the proper sequence in order to make a meaningful sentence. P: organisms living in this inter-tidal zone must be Q: able to avoid being swept away or crushed by waves, R: and must deal with being immersed during high tides and S: left high and dry at low tides.
Show Hint
Look for parallel structures in the sentence parts. Here, "must be able to avoid..." (PQ) and "must deal with..." (R) are parallel clauses joined by "and". Identifying such structures makes arranging the parts much easier.
Step 1: Understanding the Task
The goal is to arrange the four parts to describe the challenges faced by organisms in an inter-tidal zone.
Step 2: Finding the Logical Flow
Part P establishes the subject of the sentence and the main verb: "organisms living in this inter-tidal zone must be". This is a natural starting point for the sentence.
Part Q completes the verb phrase started in P: "...must be able to avoid being swept away or crushed by waves,". This is the first challenge listed. So, the sequence starts P-Q.
Part R introduces the second challenge using the conjunction "and" and another parallel verb "must deal with": "and must deal with being immersed during high tides and...". This logically follows the first challenge mentioned in Q. The sequence becomes P-Q-R.
Part S completes the list of challenges. It is linked by the "and" at the end of R. The organisms must deal with being immersed at high tides and being "left high and dry at low tides." This logically concludes the sentence. The full sequence is P-Q-R-S.
Step 3: Constructing the Final Sentence
The complete sentence reads: "Organisms living in this inter-tidal zone must be able to avoid being swept away or crushed by waves, and must deal with being immersed during high tides and left high and dry at low tides."
Step 4: Final Answer
The sequence PQRS forms a grammatically correct and logical sentence. Therefore, option (B) is the correct answer.