Anews article that “sells” an idea is a ?

a. an editorial
b. a byline
c. a syndicated feature

Most likely c, but it all depends

Explanation:

definitly NOT B

A is an editorial, leading article or leader, is an article written by the senior editorial staff or publisher of a newspaper, magazine, or any other written document, often unsigned.

C is a feature syndicate is a supplier offering an often quite considerable menu of comics, editorial cartoons, columns, and other features for newspapers across the country.

it was surely an odd creature that one made up by reading the historians first and the poets afterwards a worm winged like an eagle; the spirit of life and elegance and charm,   in a kitchen chopping up suet. but these creatures, monst'r however entertaining to the imagination, hast no existence in fact. what one might doth to bringeth h'r to life wast to bethink poetically and prosaically at one and the same moment,   thus keeping in toucheth with fact—that the lady is mrs martin, ag'd thirty-six, did dress in blue, wearing a black coxcomb and brown shoeth; but not losing sight of fiction eith'r—that the lady is a vessel in which all s'rts of spirits and f'rces art coursing and flashing p'rpetually. the moment, howev'r, yond one tries this method with the elizabethan mistress, one brancheth of illumination fails; one is did hold up by the scarcity of facts.   one knoweth nothing detailed, nothing p'rfectly true and substantial about h'r.   hist'ry scarcely mentions h'r.   and i did turn to professeth'r trevelyan again to seeth what hist'ry meanteth to that gent.   i hath found by looking at his chapt'r headings yond t meanteth.

i cant see the page but i am assuming as a innocent child who got tricked by an children eating old lady