Step 1: Understanding the Question:
We need to select the set of three words that best fits the context of the passage about cells living together.
Step 2: Detailed Explanation:
Let's analyze the context for each blank:
Blank 1: "...certain benefits could be ____________." In a biological context, benefits are gained or acquired. The word 'obtained' fits this meaning perfectly.
Blank 2: "...feed more ____________...". Living in a group can make processes like feeding more effective. The adverb 'efficiently' describes this improvement in effectiveness.
Blank 3: "Living ____________, cells began to support the needs of the group...". The entire passage is about cells "living together" and forming a "group". The word 'collectively' means as a group, which accurately describes this mode of living.
The words from option (B), 'obtained, efficiently, collectively', align perfectly with the scientific context of the passage, describing how benefits are gained, processes become more efficient, and life becomes collective.
Step 3: Final Answer:
The correct option is (B) obtained, efficiently, collectively.