Final answer:
The odd word out from the set (ploughing, sowing, manuring, rowing) is 'rowing,' as it is related to boating rather than agriculture, making it the correct option. Option d. rowing is the correct answer.
Step-by-step explanation:
From the given set of words (ploughing, sowing, manuring, rowing), the goal is to pick out the odd word. Upon examining these words, it becomes apparent that three of them are related to the process of agriculture. Ploughing, sowing, and manuring all pertain to different stages of farming. Ploughing is the act of turning over the soil before planting seeds, sowing is the action of planting the seeds, and manuring involves adding fertilizer to the soil to enhance its fertility.
On the other hand, rowing is an activity that involves propelling a boat through water using oars. Hence, it does not relate to agriculture and stands out as the odd one in this list. The correct option, therefore, is 'd. rowing'.