we know that
when you calculate the unit rate, if the numerator is greater than the denominator, then tghe unit rate is greater than 1
so
Verify each case
4 miles : 3 1/3 hour -------->
4 > 3 1/3
uniyt rate is greater than 1
1/3 mile : 2 3/8 hours
1/3 < 2 3/8
unit rate is less than 1
2 1/2 miles : 3 hours
2 1/2 < 3
unit rate is greater than 1
so
Verify each case