Explanation:

- Lavish generally means extravagant, luxurious, or excessive in spending or giving.

- Option 1: Moderate - This means average in amount, intensity, quality, or degree. It’s a restrained, not excessive, approach.

- Correct Answer: Moderation is the opposite of extravagance.

- Option 2: Grand - This implies something large, impressive, or majestic. It aligns more with something lavish rather than opposing it.

- Option 3: Generous - This means showing kindness and a readiness to give more than necessary. It might suggest largesse, somewhat similar to lavish.

- Option 4: Excessive - This means more than necessary, extreme or beyond reasonable limits, aligning with lavish rather than opposing it.