​Four words have been given, out of which three are alike in some manner and one is different. Select the odd one.​​​

Sowing – The process of planting seeds in the soil.

Ploughing – The process of preparing the soil for planting by turning it over.

Harvesting – The process of collecting crops after they have matured.

Raining – A natural weather phenomenon, not directly related to farming activities.

So, Sowing, Ploughing, and Harvesting are all agricultural activities directly involved in farming.

Raining is not a farming activity but a natural process.

Thus, the correct option is: (d) Raining​