What does 'get my feet wet' mean?

English Language Tests, Intermediate level

ESL/EFL Test #280 [color=blue]“English Slang Idioms (2)”, question 4

Most bosses won’t send you out on a job until you get your feet .

(a) dry
(b) wet
(c) green
(d) hot

English Language Tests, Intermediate level

ESL/EFL Test #280 [color=blue]“English Slang Idioms (2)”, answer 4

Most bosses won’t send you out on a job until you get your feet wet.

Correct answer: (b) wet

Your answer was: [color=red]incorrect
Most bosses won’t send you out on a job until you get your feet hot.
[size=200]_________________________[/size]

get your feet wet? - being more prepared/ready? thanks!

Hi Saneta,
When you “get your feet wet,” you gain experience or become involved in something.

I’d add that “get your feet wet” means to gain your first experience in something or just try to be engaged in something new.