Final answer:
The factors that determine soil fertility needs include soil texture, soil pH, and nutrient levels.
Step-by-step explanation:
The factors that determine soil fertility needs include soil texture, soil pH, and nutrient levels.
Soil texture refers to the proportion of sand, silt, and clay particles in the soil. Different soil textures have different water-holding capacities and nutrient retention abilities, which can affect plant growth.
Soil pH is the measure of acidity or alkalinity of the soil. Different plants have different pH requirements, and the pH level of the soil affects nutrient availability for plants.
Nutrient levels in the soil, such as nitrogen, phosphorus, and potassium, are crucial for plant growth. Plants obtain essential nutrients from the soil for various vital functions.
Therefore, the correct answer is d) All of the above.