Which of the following is not a major area in science ? a.)physical science b.) life science c.) social science d.) basic science

It is either C or D. I am guessing C. I hope this helps a little. I have heard much about social science so that's my theory.

 C.) social science

Explanation:

Science is a discipline which consists of information of natural processes and natural events occur on the entire universe on the basis of evidences obtain after the detail experimental procedures.

Social science is not the major area in science. As it is concerned with the relationship of the individuals with the society, the associated culture and ethics. Experimental procedure cannot be performed to answer the cause associated with the social phenomena.

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.