The act of cultivating land and rearing of animal for man's use is

Step 1: Analyze the question The question asks for the term that covers both cultivating land (crop farming) and rearing animals (livestock) for human use.

Step 2: Explain the concepts

• Forestry: managing and harvesting forests and timber. It does not involve rearing animals.
• Agriculture: the science and practice of cultivating the soil, growing crops, and raising livestock for food, raw materials, and other human needs.
• Monoculture: growing a single crop on a piece of land, usually year after year. It covers only one type of crop farming.
• Horticulture: the cultivation of fruits, vegetables, flowers, and ornamental plants, usually on a small scale. It does not include animal rearing.

Step 3: Solve The phrase "cultivating land and rearing of animals" points to both crops and livestock. Only agriculture covers both. The other options are either too narrow (monoculture, horticulture) or cover something different (forestry).

Step 4: Answer The correct option is B. agriculture.

Tip: In definition questions, look for the keywords. If you see both crops and animals, think "agriculture". If you see only plants like flowers and vegetables, think "horticulture". If you see one crop only, think "monoculture". If you see trees and forests, think "forestry".