Step 1: The Gross Ratio measures the share of gross income consumed by total farm expenses.
Step 2: Fixed expenses/Gross income and Operating expenses/Gross income only capture part of the expenses, not the total, so they are ruled out.
Step 3: Gross income/Total asset \( \times 100 \) measures asset returns, a different concept entirely.
Step 4: The correct formula is \[ \boxed{\text{Gross Ratio} = \frac{\text{Total Expenses}}{\text{Gross Income}}} \]