Which choice completes the text so that it conforms to the conventions of Standard English?

Question

Only one country ____ has ratified all three of the treaties.

Accepted Answer

A. , namely Norway,. 'namely Norway' is a nonessential aside identifying the country; it is set off by a comma on each side.

Answer

B. namely Norway — Without commas, 'one country namely Norway has' runs the aside into the sentence.

Answer

C. , namely Norway — Only the opening comma; the aside must be closed before 'has'.

Answer

D. namely, Norway — No comma opens the aside, and the comma after 'namely' is not the convention.

Standard English Conventions practice question