A four letter word? my guess would be <em>LEAP</em>
noun
the coming of one person or thing after another in order, sequence, or in the course of events:
many troubles in succession.
a number of persons or things following one another in order or sequence.
the right, act, or process, by which one person succeeds to the office, rank, estate, or the like, of another.
A is the answer for a fact
Which 3 headings would best fit paragraph 2?
B ,C, or F
~Hope this answers your question!~