Of which of the following nutrients do infants require extra servings?

Sorry but Is there any options to choose from because it does say which of the following?

I’m going to guess these are the choices: a) recreational skiing developed in the mid-19th century b) it was originally invented as a way of getting from place to place in snowy regions c) downhill skiing is currently the only common form of the sport d) it mostly evolved from snowshoeing- if that’s the cases then the answer would be c) downhill skiing is currently the only common form of the sport

Keep your breathing calm and try to ignore it