Answer:
A. double-blind
Explanation:
Based on the scenario being described within the question it can be said that the type of trial that she has joined is known as a double-blind study. This is a type of study in which individuals are chosen randomly for each clinical intervention and the results are not given to the researchers until after the trial. This also includes any and all information that may influence the researchers behavior or thoughts on the study.
Answer:
I'm gonna say A
Explanation:
The other ones don't go the same from humans and plants. Us humans and plants need food to have energy. Like we need food to exercise.
Answer:
All the populations living together in the same area are called a community
Explanation:
hope this helps
