Step-by-step explanation:
The correct answer is B. Nitrogen. Plants require nitrogen for growth and development, and carnivorous plants have adapted to obtain nitrogen from the insects they consume. These adaptations allow them to survive in soils with low nitrogen content. A. Potassium is an essential nutrient for plants, but carnivorous plants do not obtain potassium from their prey; instead, they absorb potassium from the soil. C. Calcium is an essential nutrient for plants, but carnivorous plants do not obtain calcium from their prey; instead, they absorb calcium from the soil. D. Water is an essential nutrient for plants, but carnivorous plants do not obtain water from their prey; instead, they absorb water from the soil. E. Phosphate is an essential nutrient for plants, but carnivorous plants do not obtain phosphate from their prey; instead, they absorb phosphate from the soil.