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" .
_____________________________________________
