They settled in a small village

[Guest]

Test No. incompl/advan-2 "Spin Doctors", question 3

When they had both retired, they ......... in a small village by the sea.

(a) stop
(b) trial
(c) stopped
(d) settled

Test No. incompl/advan-2 "Spin Doctors", answer 3

When they had both retired, they settled in a small village by the sea.

Correct answer: (d) settled
_________________________

Hello!
Why could not I say "stopped" in this sentense?

Thanks for help.

[Narayanan Krishnaswamy]

The use of the word 'retire' decides the use of the selection of 'settle ' here.