How to decide major product?

#1

In Q.81 there can be two products - (c) or (d)

How can we decide the major product ? And will cyclic structure always be the major product ?

#2

Is it c?

#3

Yes

#4

There is a reaction called NGP neighbouring group participation.
In option D there is a possibility of reaction and that reaction occur and form a cyclic product. If there is a possibility of forming ring then we will form ring.