ANSWER
It is horizontally compressed by a factor of 2 and reflected over the y-axis.
EXPLANATION
The parent function given to us is
The parent function has been transformed to obtain
This transformation is of the form:
If
then,there is a horizontal compression by a factor of k.
Hence
is horizontally compressed by a factor of 2.
Since -2<0, it is a reflection in the y-axis.
The correct choice is the last option.