Correct Answer: Repulsive

Solution : The first option is the correct answer.

Hideous means extremely ugly or shocking and repulsive means causing intense disgust or aversion, which closely aligns with this meaning.

The meanings of the other options are as follows:

• Pretty means attractive in a delicate or dainty way.

• Attractive means pleasing or appealing to the senses.

• Plain means simple or unadorned.