Question

roshni suffers a lot __she always keeps a cheerful face

so
because
but
unless​

Answer 1

Answer:

so is the correct answer

Answer 2

The correct conjunction will be :-

Roshni suffers a lot but she keeps a cheering face .

Well a conjuction is particular word which joins various clauses and phrases.But is used when there are two different clause or characteristics in a sentence .

For ex- Rahul is thin but he is strong

Rima is very poor but she is very honest.