Answer
Please see the work below.
Work Step by Step
Spontaneous processes are sudden processes. Spontaneous processes take place without much external energy.
Nonspontaneous processes take place with the help of external energy.
(a) dissolving table salt (NaCl) in hot soup - Spontaneous process
(b) Climbing Mt. Everest - Nonspontaneous Process
(c) Spreading fragrance in a room by removing the cap from a perfume bottle - Spontaneous process
(d) Separating helium and neon from a mixture of the gases - Nonspontaneous Process