Correct Option (D)
Neither assumption 1 nor assumption 2 is valid based on the information provided in the passage.
- Assumption 1 states that polar bears fast as long as eight months due to non-availability of prey. The passage mentions the mother bear "has fasted for as long as eight months" but does not specify the reason for this fasting. The text does not provide any information to confirm that the fasting is a direct consequence of prey scarcity.
- Assumption 2 posits that polar bears always give birth to triplets. The passage uses the conditional phrase "If there are triplets," which indicates a specific scenario or possibility rather than a universal or constant occurrence. This phrasing implies that triplets are one potential litter size, not that polar bears exclusively or always produce three cubs.
Incorrect Options:
- Option (A) "1 only" is incorrect because Assumption 1 cannot be validly inferred from the passage, as the reason for the mother bear's fasting is not stated.
- Option (B) "2 only" is incorrect because Assumption 2 is not supported by the passage. The text indicates triplets as a possibility, not a certainty or an exclusive outcome.
- Option (C) "Both 1 and 2" is incorrect as neither Assumption 1 nor Assumption 2 can be substantiated by the details provided in the passage.