3. People often associate the Clean Ponds with a) famous sportsmen and sportswomen b) works by great architects c) actors and acting

Решение:

В тексте говорится: «One of the most popular Moscow theatres "Sovremennik" is situated in this area too. Every evening you can see theatregoers coming to the theatre to watch one of its plays.» Это прямо указывает на связь прудов с театром и, соответственно, с актерами и театральным искусством.

Ответ: c) actors and acting