I think you should not conflict and should try to solve it by a peaceful discussion because conflict is not only the solution...
Not always. Sometime it could say positive, but that is all up to the type of preg test you took.
Answer:
4) No control group was used.
Explanation:
In order to check the side effects of this multivitamin tablet. It is first important to establish a control group. If the control group does not have the side effects which the treatment group of individuals (those who have taken the multivitamin tablet) have, it shows that the side effect is purely because of the tablet.
Whose** is the answer I guess