I'm pretty sure, it's enseña.
Since conjugation is:
yo = enseño
tú = enseñas
él/ella/ud. = enseña
nosotros = enseñamos
vosotros = enseñáis
ellos/ellas/uds. = enseñan
hopefully my answers help!
(if my answers helped you tell me, therefore I know.. that I did them correctly. anyways, have a great day/night!)
