The correct answer is Rhizopus.
Rhizopus stolonifer is the black mold that is commonly found on the bread and it is commonly known as the black bread mold.
It is the most common fungi in the world which is found in the tropical and sub tropical climate.
It is the common agent of decomposition in the food materials that is stored over a longer period of time. It grows very rapidly and makes the bread appear black.
