Meaning of any other business

[rich7]

Test No. incompl/advan-8 "Business", question 7

There's really no point in hoping to add important topics right at the end of the meeting under the heading of any other ..........

(a) business
(b) work
(c) activity
(d) tasks

Test No. incompl/advan-8 "Business", answer 7

There's really no point in hoping to add important topics right at the end of the meeting under the heading of any other business.

Correct answer: (a) business

Your answer was: correct
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I don't quite understand the meaning of the sentence as a whole?

[Alan]

This means you shouldn't talk about important topics at the end of the meeting because the heading any other business is really for less important matters that don't need a lot of time to discuss.
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English as a Second Language
You can read my ESL story Relative Pronoun