The answer is D, third person. The author uses words such as "he" and "his"
Riding a skateboard is a phrase
A phrase can not have verb and subject together. riding a skateboard doesn't have subject. the others are clause.they have both subject and verb.
good luck.
I'd have to cross out B.) and C.), which leaves you with A.) and D.)
I'd have to go with D.) Pitiful