Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of $0$ and a standard deviation of $1.$ Find the probability that a given score is less than $1\mathrm{.}84$ and draw a sketch of the region.

Sketch the region. Choose the correct graph below.

A$.$

B$.$

C$.$

D$.$

The probability is

$($Round to four decimal places as needed.$)$