Question : Comprehension:
In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.
The locust is an insect that belongs to the family of grasshoppers. These insects are essentially harmless (1)_________they meet certain circumstances under which they (2) __________more abundant and change their behaviour. India, Pakistan and Iran (3)______ currently thinking over the locust plague threat (4) _________over their economies. When these locusts meet (5) _________environmental conditions, they become gregarious and (6) _________breeding abundantly. With their population becoming (7) ____________, they form swarms and keep moving (8) ____________areas damaging the crops. These swarms attacking (9) ___________and thereby devastating the entire agricultural economy is (10) ____________is commonly referred to as locust plague.
Question:
Select the most appropriate option for blank no. 1.
Option 1: unless
Option 2: after
Option 3: although
Option 4: when
Correct Answer: unless
Solution : The correct choice is the first option .
The word unless is used to introduce a condition that must be fulfilled for a particular situation to occur.
In this context, it means that the insects are generally harmless, but they might pose a threat or have an impact under specific circumstances. So, the sentence conveys that the harmlessness of the insects is conditional upon not meeting certain circumstances.
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