Answer
There are $~~3~~~m_l$ values associated with $~~l=1$
Work Step by Step
For any given value of $l$, the values of $m_l$ can be $~~m_l = 0, \pm 1, \pm 2,...,\pm l$
If $l=1$, then the values of $m_l$ can be $~~m_l = -1, 0, 1$
There are $~~3~~~m_l$ values associated with $~~l=1$
