Meaning of "turn off"

[Lirlik]

Test No. errors/inter-14 "Great expections when you are so carried away", question 10

There is one small problem of course. What happens if the baby turns off to be a girl?

(a) small
(b) if
(c) off

Test No. errors/inter-14 "Great expections when you are so carried away", answer 10

There is one small problem of course. What happens if the baby turns out to be a girl?

Correct entry: out
The error was: (c) off
_________________________

What does "turn off" mean?

Lirlik

[Torsten]

switch off; stop being interested; leave a road or route etc.

TOEIC listening, talks: A tour guide is welcoming her guests