The correct option is B Unionists
The Catholics were
represented by Nationalist parties who
demanded that Northern Ireland be
unified with the Republic of Ireland,
a predominantly Catholic country. The
Protestants were represented by
Unionists who wanted to remain with
the UK, which is predominantly
protestant. Hundreds of civilians,
militants and security forces were killed
in the fight between Unionists and
Nationalists and between the security
forces of the UK and the Nationalists