The diagram below shows a food web. a diagram of a food web is shown. arrows are drawn from algae to crabs, from seaweed to an empty cell labeled b, from empty cell labeled b to crabs. the arrow from an empty cell labeled a points towards mussels, from mussels towards crabs. if a certain organism is a producer, what best explains its position in the food web? b, because organism b utilizes radiant energy from the sun a, because organism a has the same role as the algae b, because organism b has the same role as the crabs a, because organism a utilizes energy from mussels