Round 8.367 to the place of the underlined digit.
the 3 is underlined
8.3
8.0
8.4
8.36

The answer is:  [C]:  "8.4" .

Note.  We are asked to round to the "10ths" place.  We are given:

8.367 .  We examine the value of the 10ths place, which is "3" ; and then the number following.  If the number in the digit following is from 0 to 4, we round to:  "8.3" ; (that is, we "round down").  If the number in the digit following is from 5 to 9, we round to "8.4" ; (that is, we round up). 

In this case, the number in the digit following is a "6" ; which is a number from 5 to 9; so we round up;  to "8.4" .