Question

Fill in the blank:

The living organisms that tend to get extinct most quickly and easily in adverse conditions are ______________.

• A. birds like pigeons, sparrows, etc.
• B. animals like deer, sheep, etc.
• C. insects like butterflies, ants, etc.
• D. vegetation like grasses, creepers, etc.

Answer 1

The correct option is D vegetation like grasses, creepers, etc.

Option D: As mentioned in the passage, "Most vulnerable to these influences are plants whose extinction sets off chain reactions exterminating other species".

The word 'vulnerable' means that the plants are most easy to get extinct:

'tend to get extinct most quickly and easily'. Plants include vegetation like 'grasses and creepers'. Hence option D is correct.

Options A, B and C: These words have not been mentioned nor implied by the passage.

Hence A, B and C are wrong.