Select all the correct answers when doing medical research with human subjects, which four limitations are unavoidable? a. it’s often impossible to repeat trials on the same subjects. b. subjects may report an inaccurate medical history. c. it can be difficult to control all possible variables. d. it’s impossible to come up with testable scientific questions for human subjects. e. there are ethical or privacy concerns to consider.

The answers are option a, b , c and e.

Explanation:

Restorative research includes look into in an extensive variety of fields, for example, science, science, pharmacology and toxicology with the objective of growing new medications or medicinal techniques or enhancing the use of those as of now available.Medical inquire about investigations are intended to give data on wellbeing or infection. The motivation behind therapeutic research is to figure out how our bodies function, why we become ill, and what we can do to get and remain well. The objective of medicinal research is to enhance our wellbeing.

oxidation

explanation:

answer

it has one origin of replication, but it proceeds in two directions - d)