Concept:A scale of preference is a ranking tool that arranges alternatives according to their importance.
Explanation:Agricultural producers work with limited resources, including land, labour, capital, and time.
A scale of preference requires the farmer to list possible farming activities in order of priority.
The most important or urgent activity is placed first, and the least important is placed last.
When resources are insufficient to carry out all activities, the farmer can use the ranking to decide which ones to pursue first.
This approach prevents wastage and directs inputs toward activities that provide the highest benefit.
It therefore supports effective allocation of scarce resources among competing enterprises.
Options A, B, and D do not capture this central purpose.
Answer:C. To allocate resources effectively among different activities.