Answer :

7.55 would be correct because if there is a 5 or greater it goes up a number if it is a 4 or lower it stays the same
B. 7.55

7.546⇒the underlined is the hundredths place 
When rounding it to nearest hundredth, you will look at the digit next to it at the right.
7.546⇒six is greater than 5 so the hundredths place would round up to the next digit which is 5. 
[tex]7.546-7.55[/tex]