Where do older people sometimes want to hear the singer more than the music?
Options:
- elevator
- opera
- carnival
- music hall
- night club
In opera, the singer is the main point. Older people go to opera. Opera is a musical play.
opera

They made their way down the motorway to watch some car drive in circles, where were they going?
Options:
- indiana
- new jersey
- england
- race track
- patina
Race tracks have circular motorways. One can watch people drive in race tracls.
race track

I want to make a fortune selling houses, what should I study?
Options:
- real estate
- treasure chest
- stock market
- business
- bank
Real estate is a business of buying and selling houses.
real estate

What mineral is plentiful in milk and helps bone development?
Options:
- metal
- lactose
- calcium
- water
- fridge

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Calcium is a type of mineral that helps in bone development. It is found abundantly in milk and help prevent bone fractures.
calcium