To answer this question, we need to remember that an estimate is finding an approximation of the actual value of a mathematical operation.
Then, if we have the following numbers:
For the number, 19.01: if we rounded it to the nearest whole number or integer, we have that this number is, approximately, 19.
Likewise, if we have the number, 6.05, and if we want to round it to the nearest integer, the most approximated number is 6.
Therefore, the closest estimate for 19.01 * 6.05 is 19 * 6 = 114 or
(Option B).