Question

unionists, or loyalists, are people who
worship in catholic churches.
favor independence for ireland.
oppose the presence of british troops.
want ireland to remain part of the united kingdom.

Explanation:

Unionists/Loyalists in the context of Ireland are defined by their political stance supporting Ireland's continued membership in the UK. The other options are incorrect: most are Protestant, not Catholic; they oppose full Irish independence; and they generally support British troop presence (when deployed to uphold unionist interests).

Answer:

want Ireland to remain part of the United Kingdom.