The most appropriate option to fill the blank spaces is C. At. This is because we use the preposition at to indicate an activity or task when saying how well someone does it. For example:

• I’m good at my work.
• Robin is an expert at cheesemaking.

We often, but not always, use a gerund (verb + -ing) to identify an activity with at2. For example:

• He’s an expert at repairing all kinds of electrical engines.
• She’s good at singing and dancing.

Dribbling is a gerund that describes the activity of moving a ball along the ground with repeated small kicks or pushes.

Therefore, we can use "at" to show that Chike is very skilled at doing this activity.