Regurgitated names: the illustration in the original post shows a depression's warm sector following it's development. Exactly the same thing but with the words in a different order than they were in the days of the empire. A 'warm sector depression' is also a 'depression warm sector'. Depressions are commonly formed in mid latitudes so giving to that name. The term 'Atlantic' was because, they were observed, most commonly, of being created there. Of course the same phenomenon happens throughout the world from a range of stimuli when differing air masses come together.
Anyway, I hope that old obsolete names aren't being re-used in the current exams there's enough concocted confusion already.
The sort of question the OP quoted is fine for RAF trainees and ATPL students, with their advanced capabilities, but not for a PPL student with possibly below average intelligence. Or as I call it, simply not that clever.
I presume that is tongue in cheek.