You are shown photographs, then the name of one thing.

Pick the ONE photograph in which that thing is most plainly and completely
visible — close enough and unobstructed enough that someone could build one
from it. Prefer an ordinary everyday example over an unusual one.

Judge only what is visible. Ignore camera angle, weather and time of day.

Set index to 0 when not one photograph shows that thing well enough to
build from — picking none is better than picking a poor one.