what does the phrase "go back" mean?

[johnxyy]

English Language Tests, Intermediate level

ESL/EFL Test #164 "Idioms with the phrasal verb go", question 3

The mayor has allowed vendors to ......... to their old place after many of them complained of lesser income following the implementation of the night market last week.

(a) go back
(b) go out
(c) go on
(d) go off

English Language Tests, Intermediate level

ESL/EFL Test #164 "Idioms with the phrasal verb go", answer 3

The mayor has allowed vendors to go back to their old place after many of them complained of lesser income following the implementation of the night market last week.

Correct answer: (a) go back

Your answer was: incorrect
The mayor has allowed vendors to go off to their old place after many of them complained of lesser income following the implementation of the night market last week.
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what does the phrase "go back" mean here?

thx
johnxyy

[Alan]

Hi,

This simply means 'return'.

Alan
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English as a Second Language
You can read my ESL story Too Many Words