The answer is a. President.
The word President is the predicate nominative here, also known as predicate noun.
A predicate noun is a word which renames the noun that has been mentioned in the sentence. In this case Franklin Roosevelt is the noun that has been renamed as "President", which makes it the answer to the question.
Another example in : My brother's favourite food is pizza.
The predicate nominative in the sentence is Pizza. because that is the word that is replacing the earlier mentioned noun, which was "food".
Answer:
1) yes, 2) yes, 3) no, 4) yes
Explanation:
1) it is recommended for people to get certain hours of sleep from there age. the younger, the more sleep they should get. since younger bodies need to stay healthy. moving on to adult bodies, it is important for any age to be healthy. and im not saying the older the less sleep like adult should only get 3 hours. im just saying how younger people should go to sleep more early then actual adults. because adults can stay up a tiny bit late with no harm. 2) exercise is important for the human body. and will help you sleep due to the tiredness of your muscles. and can distract the mind from whats causing stress and/or aniexty. 3) no. they dont walk around like zombies.. they will be tired during the day though. 4) sleep isnt a big deal. its a HUGE deal. since it can effect many lifes and sleep schudules. its true you wont be at your best without your zzzs.
if you have any questions please let me know. i hope this helps. good luck! :)
The answer is B!! Cool excerpt by the way.