How does galarzo best capture the competence of his teacher, miss ryan, in the excerpt from barrio boy?

a.
he recalls how she allowed her students to teach her other languages.

b.
he describes her posture as she "patrolled" the room with her "withering height."

c.
he describes her "blond radiant" face and "wide open" eyes.

d.
he recalls how she celebrated each student's successes.