Vector contact involves contact with
a. an infected surface
b. contaminated water
c. an infected organism
d. a carrier organism

The correct answer is d.

Pathogens and parasites cause vector-borne diseases in human populations. A carrier organism is something that carries a disease (aka parasites). Thus, contact with a carrier organism equates contact with the disease it's carrying.

The answer is organisational websites.

Its simple its a because they are more fat