Answer:
1
Explanation:
Although nr. 2 and 3 are considered to be good reasons too, the first reason is the only one that really matters, due to the importance of improving work and study opportunities in a society where only high qualified - and fluent in English - persons count. 4 is interesting from a social point of view but won´t help the individual much in his/her future career.
John White probably thought that the Great Fire killed everyone in Roanoke.
