How long can an std lie dormant and be transmittable before becoming symptomatic?

It really depends on the STD. For example, Chlamydia can lie dormant in the body for many years causing a low grade infection without symptoms. And with  Gonorrhea In males, symptoms usually appear two to seven days after infection but it can take as long as 30 days for symptoms to begin. Often, there are no symptoms for people infected with gonorrhea; 10 to 15 percent of men and about 80 percent of women may have no symptoms.

i think your answer is c. measurement system in which the medication dosage was calculated.

whats the question? ?