Correct Answer: Ordinary

Solution : The correct choice will be the third option.

Impressive: It denotes evoking admiration and respect due to excellence or superiority, making a strong positive impression.

Ordinary: It denotes common, usual, or plain; not exceptional or remarkable.

In this context, "impressive" denotes something exceptional or noteworthy, so the opposite or antonym would be ordinary which signifies something common or unremarkable.

The meanings of the other options are:

Dramatic: It means intense or striking; it's not necessarily the opposite of impressive.

Significant: It denotes importance; it doesn't necessarily convey the idea of standing out positively.

Industrious: It describes a hardworking person, but it doesn't directly relate to making a strong positive impression.

Therefore, the correct answer will be ordinary.