Correct Answer: Attractive

Solution : The correct answer is the first option.

The word "hideous" describes something extremely unpleasant or repulsive in appearance. The antonym "attractive" refers to something appealing, pleasing, or charming in appearance.

The meanings of the other options are as follows:

• Restorative refers to something that has the power to restore health or well-being.
• Lament means to express grief or sorrow.
• Healthful means promoting good health.

Therefore, the correct answer is attractive.