Which carbons are chiral centers in sucralose?
The answer is 9.
What is a chiral carbon? It is simply a carbon aton that has 4 different groups bonded to it.
Starting from here, we should deduce that a chiral carbon must be SP3 hybridized.
If you take a look at the sucralose molecule, you should automatically look at carbons that don't have any double or triple bonds. You should then start looking for carbon atoms that have four different groups.
If you count them, they're 9. Simple as that.
I hope that helped!