The fate of the roanoke colonists is unclear because they
moved to a different area.
disappeared from the area.
refused to discuss their time at roanoke.
agreed to keep their activities a secret.

B. they disappeared from the area.

<3

norsemen from northern countries had made earlier journeys

b. after i get up in the morning,

explanation:

after is a subordinating conjunction that introduces a time clause. time clauses are dependent clauses used to indicate when something happened.

the clause "after i get up in the morning" tells when the action in the main clause (drinking a cup of coffee) happens:

"after i get up in the morning, i drink a cup of coffee." it is the most logical choice of all.