Final answer:
James II faced opposition when he became king due to his Catholic faith, which led to fears of an absolute monarchy and loss of Protestant English liberties.
Step-by-step explanation:
Many people opposed James II when he became king because he was a Catholic. This religious affiliation was alarming to the English population because, as a Catholic monarch, James II was perceived to be moving toward establishing an absolute monarchy akin to that of his cousin, French King Louis XIV. James sought to centralize power and impose his religion on a predominantly Protestant nation, causing great consternation among his subjects. He appointed Catholics to crucial positions and threatened to suspend laws, including the Test Act of 1673, that limited Catholic power. His actions fostered fears of a loss of traditional English liberties and a shift towards an absolute Catholic monarchy.