The orbital with 4 radial and 1 angular nodes is 

Radial nodes =n¬ $l$- -1
Angular node = $l$
Where, n = Principile quantum number.
$l$   = Azimuthal quantum number.
For 5py, n = 5,  $l$ = 1
 Radial node = 5 – 1 – 1 = 3
 Angular node = 1
For 6pz, n = 6,  $l$ = 1
 Radial node = 6 – 1 – 1 = 4
 Angular node = 1 
For 4d_xy, n = 4, $l$ = 2
 Radial node = 4 – 2 – 1 = 1
 Angular node = 2
For 5dyz, n = 5, $l$ = 2
 Radial node = 5 – 2 – 1 =2
 Angular node = 2
Hence, the orbital node 4 radial and 1 angular nodes is 6p