Answer:
The correct option is : a. coagulase-positive
Step-by-step explanation:
Staphylococcus aureus is a round, gram-positive bacteria, which belongs to the phylum Firmicutes. It is responsible for causing many minor infections like boils and pimples; and also many life threatening diseases like meningitis and pneumonia.
The staphylococcus aureus bacteria is mostly associated with being coagulase-positive.