The function is $\"\"$ .

Parent function is greatest integer function $\"\"$ .

Both are correct.

For the greatest integer function, a shift of $\"\"$ units left is identical to a shift of $\"\"$ units up.

The graph of $\"\"$ is the graph of $\"\"$ is shifted $\"\"$ units to the left.

The graph of $\"\"$ is the graph of $\"\"$ is shifted $\"\"$ units up.

Both; For the greatest integer function, a shift of $\"\"$ units left is identical to a shift of $\"\"$ units up.