Answer: Experiment
Explanation: Scientific research embarked upon in other to test prediction or hypothesis is simply called an Experiment. Experiments are usually carried out in a controlled environment in other to control for external influences or manipulators. It may involve splitting subjects into groups, one is based on the hypothesis to test or validate and the other will be the opposite. The researchers in the context above, intends to validate or test an hypothesis about whether incentives would boost donation. The first group were given incentives while the other group weren't. Which turns out that incentives does boost donation.
Answer:
endoneurium and perineurium respectively
Explanation:
Endoneurium: Is a layer of a very delicate connective tissue around the myelin sheath of each myelinated nerve fiber in the peripheral nervous system. Its composed by cells that are called endoneurial cells.
Perineurium: It's a protective sheath that surrounds each group fascicles, which are axons that target the same anatomical location where one can find the Endoneurium.
A form of congress or the representatives