Kilian Jornet is very talented ____ running on mountains.

Kilian Jornet is very talented ____ running on mountains.

• A. in
• B. on
• C. for
• D. at

Answer: (D)

When talking about someone's ability in a sport or activity, English commonly uses the preposition at followed by a verb in the -ing form. Here, the activity is running, so the natural arrangement is talented at running. The -ing form after at shows the specific activity in which the person has skill. Other prepositions don’t fit as well. In can be used in some contexts, but with talents in activities we usually say at; on isn't used to link talent to an activity, and for doesn’t convey ability in that action. So the most natural choice is at.

When talking about someone's ability in a sport or activity, English commonly uses the preposition at followed by a verb in the -ing form. Here, the activity is running, so the natural arrangement is talented at running. The -ing form after at shows the specific activity in which the person has skill.

Other prepositions don’t fit as well. In can be used in some contexts, but with talents in activities we usually say at; on isn't used to link talent to an activity, and for doesn’t convey ability in that action. So the most natural choice is at.