The origins of the distinguishing characteristics between the two types of fruits, climacteric and non-climacteric are

Question

Option 1: nebulous in spite of research.

Option 2: clear now as a result of this research.

Option 3: trivial at this stage.

Option 4: dependent on researcher observation.

AfterBoards · Accepted Answer

Option 1 is correct because the passage explicitly states that the differences in how these types of fruits came about remains unclear, thus they are 'nebulous.'
Option 2 is incorrect as the passage does not claim that the research has clarified these origins.
Option 3 is incorrect as the passage does not deem the differences trivial; it suggests they are significant but not yet understood.
Option 4 is incorrect because it's not solely dependent on observation but also on understanding evolutionary biology which the passage suggests is still a subject of study.

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