which kind of organism is an autotroph?\nconsumer\nproducer\n decomposer\nherbivore

Brief Explanations:

Autotrophs are organisms that can produce their own food using light, water, carbon - dioxide, or other chemicals. Producers, like plants and some algae, are autotrophs as they perform photosynthesis to make their own food. Consumers, decomposers, and herbivores rely on other organisms for food.

Answer:

B. producer