$\"\"$

The function is $\"\"$ .

The logarithm function is not defined for negative values.

If $\"\"$ is defined for negative values, then $\"\"$ is defined.

$\"\"$ is defined at left side of zero.

Therefore, $\"\"$ values are negative.

Observe the graph (c) is defined in negative values.

Graph of $\"\"$ is graph (c).

$\"\"$

Graph (c).