A, E, I, O, ?

A. U

Identify the missing letter in the series: Z, Y, X, W, ?

A. V

Complete the series: B, D, F, H, ?

A. J

Identify the missing letter in the series: Z, X, V, T, ?

B. S

What letter comes next in the series: B, D, F, H, ?

A. J