Explanation:

- "Bang for the buck" refers to getting more value or benefits for the amount of money or effort you invest.

- Option 1: More value for money

- Correct! This means you get good returns or results for what you spend.

- Option 2: Less value for money

- Incorrect. This means you are getting poor returns for your spending, which is the opposite of "bang for the buck."

- Option 3: A sorrowful heart

- Incorrect. This is unrelated to financial or value contexts.

- Option 4: Dash against something

- Incorrect. This phrase suggests a physical action, not connected to measuring value or cost.