-Which greek base means narrow?

Question

1. sten-
2. platy-
3. mer-
4. xanth

Answer 1

can some1 plz help me with this question i have 2 submit my exam

Answer 2

stenos. Greek, meaning ‘narrow’, e.g. the root word of the first part of the specific epithet of Macrozamia stenomera, referring to the finely divided leaflets. See also –merus.

I think the answer is 1.
but I'm..I'm not 100% sure

Answer 3

http://www.wordinfo.info/words/index/info/view_unit/2033/

yes, steno-