Les’s favorite sport, skiing, is an expensive interest. Identify the word in bold.

I see a Gerund which would be 'skiing'. I say this because skiing is a verb, but in this sentence it is a present noun. So the answer here would be;

A. gerund

Explanation:

daylight saving time (dst) has been used for more than 100 years. changing the clocks does not create extra daylight, but it causes the sun to rise and set at a one of the aims of dst is to make sure that people's active hours coincide with a german analysis of 44 studies on energy use and dst found a positive

the answer that is more accurate is:   el profesor nos enseñamos bien.