The right answer is B.
Cholera vaccination is only recommended for staff who have to intervene with patients in an epidemic situation. In all other cases, effective prevention is provided by good personal hygiene (washing hands) and food.
It is also important to know that this vaccine does not protect permanently: It protects only about 90% within 6 months, then to 50% within 3 years.
Answer:
the last option is the answer
A population is a group of individuals living IN THE SAME GEOGRAPHICAL AREA that are capable of interbreeding and producing viable fertile offspring.
