Roaches are evil my dude, I think they've always been this way but we've never noticed
Answer: antibiotics, vaccines, ointments, creams, and OCT medicine.
Explanation: OR 1) through contact with an infected person
2) contact with a contaminated object
3) contact with an infected animal
4) contact with an environmental source
Wholesalers are traditional "Middle Men" they buy large bulk from manufactures, most of the time with their own transportation (Their Niche) and they sell and deliver in smaller quantities to "Retailers" and charge more per unit.
I'm pretty sure the answer's a bit obvious.
A condom helps prevent the spread of sexually transmitted diseases.
So A.
