Which of these strategies are in reducing a person's chance of contracting an std/sti? select the three correct answers. a. vaccination b. mutual monogamy c. abstinence d. increased number of sexual partners

Definitely not performing the act would decrease your chances of catching an STD superbly. The only other way you'd get an STD would be for you sharing some bodily fluid say during needle sharing, for those that spread through such means. Your answer is C

Correction* Vaccinations and Mutual Monogamous relationships, also reduce the risk for STDS

Well, this question is tricky

D: it definitely isn't D since the more sex with different people you have the greater chance you have of contracting stuff.
C: if you stop your self from sex completely you have a 100% chance of not getting a STD.
B: if you only have sex with one person then that cuts down on the chance of std, unless that one person has an std
A: vaccination, seems like the best option if there is indeed a option to vaccinate or check for disease

I am guessing A: Vaccination

It is either that or c

I hope this helped

An epidemic is a large and localized outbreak of a sickness or disease.  a pandemic is a large global outbreak of a sickness or disease. 

Your dog can sniff at or even eat a bit of catnip. the herb is edible and not harmful. just don't expect them to roll around like a cat would! your dog may scrutinize catnip by licking and smelling at it, or be totally indifferent to this stimulant.