Scientists have developed a new type of margarine containing plant ingredients they think will lower blood cholesterol levels in people who use the margarine. they want to test this by having some people use the new margarine for a while (experimental group) and then compare their blood cholesterol levels with those of a group of people who use regular margarine (control group). this is an example of what type of research design?

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. 

I’ve personally felt invisible all my life, especially when a friend turned out to be fake and didn’t seem to take any type of interest in what i said or any type of input i said. being invisible is a terrifying feeling to experience due to the fact you feel like no one sees you and just sees you (sorry if that doesn’t make sense). it’s like a deep emptiness that no one can fill, just you; you have to fix that emptiness by yourself and you don’t really want , or in some cases want to be invisible. i can see many invisible people when they intentionally stay away from people that can potentially hurt them in any way. also, when a person intentionally breaks off a connection so they aren’t seen by people.hope it

Ithink the correct answer is c