Final answer:
Herbivores obtain nitrogen by eating plants and vegetables, as their digestive systems are adapted to handle plant material which is rich in necessary nutrients.
so the correct answer is Option B
Step-by-step explanation:
Herbivores are able to obtain the nitrogen needed to synthesize their own proteins by eating plants and vegetables. These animals, including vertebrates like deer and invertebrates such as caterpillars, have evolved complex digestive systems to process plant materials effectively. Plants provide a vital source of nitrogen for herbivores, which they need for essential biological processes like building proteins.
the correct answer is Option B