Explanation:

Here’s an explanation of the options:

- Option 1: Revenue Receipt

- These are incomes earned during the normal course of business, like sales revenues.

- Share purchases don't fit here because they are investments, not regular income.

- Option 2: Revenue Expenditure

- These are short-term expenses for operational needs like rent or utilities.

- Share purchases are not operational expenses; they are investments.

- Option 3: Capital Receipt

- Involves inflows from the sale of fixed assets or investments.

- Buying shares is an outflow, not an inflow.

- Option 4: Capital Expenditure

- ?? Correct Answer: Involves spending on acquiring or upgrading long-term assets.

- Buying shares is a long-term investment, hence a capital expenditure.