Answer
$II$ region
Work Step by Step
When we reverse the digits of $454$, we get $454$. This means that $454$ is a palindromic number.
$454$ is an even number.
A - the set of palindromic numbers
B - the set of even numbers
$454$ belongs in A as well as B; therefore, it belongs in the region that is inside of the circle for A as well as the circle for B: the $II$ region.