Identify the correct option for each of the following questions related to agriculture and its related industries. Choose from the options provided in each question.

Step 1: Answer Question 1. The use of crude implements, or basic tools, is a problem that primarily affects agriculture, leading to low productivity. The correct option is (b). 1. (b) agriculture Step 2: Answer Question 2. A tractor is a piece of machinery directly used in agricultural activities, making it a component of agriculture. The correct option is (d). 2. (d) tractor Step 3: Answer Question 3. Subsistence agriculture is a form of farming where the produce is primarily for the farmer's own consumption, often associated with peasant farming. The correct option is (c). 3. (c) peasant Step 4: Answer Question 4. Rubber and cotton are grown for sale rather than for direct consumption, making them cash crops. The correct option is (b). 4. (b) cash Step 5: Answer Question 5. Poverty is a significant problem that affects and is often intertwined with agriculture, especially in developing economies. Therefore, the statement is true. The correct option is (b). 5. (b) true Step 6: Answer Question 6. Columbite is an ore containing niobium and tantalum, which are used in high-temperature alloys and specialty steels for heat resistance. Tin is also a mineral found in basement complex rocks. The correct option is (c). 6. (c) tin and columbite Step 7: Answer Question 7. The process of digging deep holes to extract mineral resources from the earth's crust is known as mining. The correct option is (c). 7. (c) mining Step 8: Answer Question 8. "Black gold" is a common term used to refer to petroleum (crude oil).