The cost of revenue from operations will be:

Revenue from operations - Gross profit

The correct answer is option 2- Revenue from operations - Gross profit.

Gross profit is a measure of a company's profitability from its core business operations before considering other operating expenses, interest, taxes, or non-operating items. It represents the profit made by a company after deducting the cost of goods sold (COGS) from revenue from operations.
The formula for calculating Gross Profit is: Gross Profit = Revenue from Operations - Cost of Revenue from Operations
Gross profit is an important indicator as it shows the efficiency of a company's production or service delivery processes. It helps in assessing how well the company can control its direct production costs and how much value it adds to its products or services. A higher gross profit generally indicates better operational efficiency, as it means the company is generating more revenue relative to its direct production costs.