B. I believe if not B. that it has to be D.
The talk test is a simple way to measure relative intensity. In general, if you're doing moderate-intensity activity you can talk, but not sing, during the activity. If you're doing vigorous-intensity activity, you will not be able to say more than a few words without pausing for a breath.
A. True
A number of small studies of smoked marijuana found that it can be helpful in treating nausea and vomiting from cancer chemotherapy. A few studies have found that inhaled (smoked or vaporized) marijuana can be helpful treatment of neuropathic pain (pain caused by damaged nerves)
It depends on the indicator type; typically if it is darker in some way, it is positive
The liver is the one responsible for making cholesterol in your body when needed.
Hope this helped ^^