ANSWER
6
Step-by-step explanation
Aubrey has 25 bracelets.
To divide it among her 4 friends, she has to divide the number of bracelets she has by 4.
That is:

Because number of bracelets can only be a whole number, we have to look for the whole number that is closest to 6.25 and lower than it.
To do that, we round down:

So, the rounded number of bracelets that Aubrey should give them is 6.