Step 1: Understanding the Concept:
A strong argument must be a reason that is important and directly related to the issue in the statement. A weak argument is either irrelevant or of minor consequence.
Step 2: Detailed Explanation:
1. Analysis of Argument I: Most current energy sources (coal, petroleum) are non-renewable and are depleting fast. Switching to solar (a renewable source) is a logical and necessary step for long-term energy security. This is a crucial and factual reason. Hence, Argument I is strong.
2. Analysis of Argument II: While solar infrastructure does require high initial capital, stating that India "lacks" capital to the point of not making the effort is a weak reason. Budgetary constraints are hurdles to be managed (via foreign investment, loans, or subsidies), not a definitive reason to abandon a vital transition. Hence, Argument II is weak.
Step 3: Final Answer:
Only Argument I provides a strong, logical reason for the action mentioned in the statement.