Answer:
The correct answer is AND.
They went shopping to Next AND Gap
Explanation:
In this sentence, the word 'and' acts as a linking or a transition word. Transition words are part of the English language (and many other languages) that help to establish a connection and continuity between two pieces of text.
They cans also be described as a a 'bridge' between two parts of a sentence.
Some other transition words including
etc.
In other languages e.g. in Urdu/Hindi, the equivalent of 'and' is the word 'aur'