meaning of "hang out"

[Quong]

English Language Tests, Intermediate level

ESL/EFL Test #236 "Common Phrases and Respones (2)", question 1

Do you want to hang out tonight? .........

(a) I need a vacation.
(b) I think we should hang it up to dry.
(c) Sure, let's watch movies together.
(d) My hands are full right now.

English Language Tests, Intermediate level

ESL/EFL Test #236 "Common Phrases and Respones (2)", answer 1

Do you want to hang out tonight? Sure, let's watch movies together.

Correct answer: (c) Sure, let's watch movies together.
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what exactly means the phrase hang out?

Quong

[Mister Micawber]

.
Here, 'hang out' means 'accompany each other in an activity'. 'Hang out' also means 'relax idly in a regularly frequented location'.
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Native English teacher at Mister Micawber's