Is food/grocery shopping a fixed cost, semi-variable cost or variable cost?

• low cost auto insurance
• low cost life insurance
• business insurance costs

Doing a personal cash budget for an assignment and I need to know which type of costs are these:

1. Accommodation (inc utilities)

2. Phone and laptop insurance

3. Gym (membership)

4. Food

5. Charity

6. Travel

7. Entertainment/Social

8. Clothes

9. Gifts


I'm pretty sure Accommodation and Insurance are fixed costs, but I don't know the rest. Could anyone help me out if possible please

Is food/grocery shopping a fixed cost, semi-variable cost or variable cost?