What does the expression "find the way out" mean?

[Anasis]

English Grammar Tests, Elementary Level

ESL/EFL Test #61 "Chit Chat: In the supermarket", question 10

Old lady: Well you see this supermarket is so big I can't find the way ......... I've been here since Tuesday!

(a) on
(b) off
(c) out
(d) through

English Grammar Tests, Elementary Level

ESL/EFL Test #61 "Chit Chat: In the supermarket", answer 10

Old lady: Well you see this supermarket is so big I can't find the way out I've been here since Tuesday!

Correct answer: (c) out
_________________________

What does the expression "find the way out" mean?

Anasis

[Mister Micawber]

.
Locate the exit.
.
_________________
Native English teacher at Mister Micawber's

[Saneta]

,,.......I've been here since Tuesday!'' -what a sense does this part of sentence mean? The old lady has been in shop since Tuesday untill now-Thursday!?, and didn't go home, is it a joke??

[Mister Micawber]

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Yes, a joke.
.
_________________
Native English teacher at Mister Micawber's