GATE CS 2015 Set 3 QGA-6 — General Aptitude

The given sentence is:

"Alexander turned his attention towards India, since he had conquered Persia."

Here, the conjunction "since" establishes a direct causal dependency between the two events:

• Cause: He conquered Persia.
• Effect: He turned his attention towards India.

Because the second event happened since (because) the first event occurred, we can logically infer that if the cause had not occurred, the effect would not have taken place. This is a standard counterfactual implication:

$$\text{Not Conquered Persia} \implies \text{Would not have turned attention towards India}$$

This directly matches Option A.

Why other options are incorrect:

• Option B: "Resting on his laurels" is an external assumption/idiom not supported or mentioned in the text.
• Option C: The text says nothing about Alexander's control over his army.
• Option D: The text does not mention geographical borders or the extension of his kingdom to Indian borders.