Meaning of any other business

Test No. [color=blue]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
© activity
(d) tasks

Test No. [color=blue]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: [color=green]correct
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I don’t quite understand the meaning of the sentence as a whole?

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.