I believe it should be C - documentary.
B . They illustrate a strict adherence to social rules.
The gym is closed on Sundays, it opens on Monday morning.
There is no need to add “early” since the word “morning” is already in the sentence.
3. The Crimean War.
Explaination:
The Charge of the Light Brigade was a failed military action involving the British light cavalry led by Lord Cardigan against Russian forces during the Battle of Balaclava on 25 October 1854 in the Crimean War.
Is that what the books called ?