" Which one of the following atomic orbitals is not directed along axis "

Which one of the following atomic orbitals is not directed along the axis?

Which of the following orbital is non-directed in nature?

Which of the following atomic orbitals overlapping are not allowed

Which of the following atomic orbitals overlapping are not allowed

Which of the following orbitals is not symmetrical about the Z-axis?

Which of the following combinations of atomic orbitals gives antibonding pi MO (assume z - axis as internuclear axis) ?

Which of the following overlaps of atomic orbitals does not form pi -bond if z-axis is the internuclear axis?