Where is the retina located?

Retina is location along the back of an eye (Option D)

Hope that this was helpful :)

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.

yes, because even though a theory has a  lot of evidence to support it, it is not always true