Basically they say "null hypothesis" according to source:
http://www.statisticshowto.com/what-does-it-mean-to-reject-the-null-hypothesis/
Answer:
Option D
Explanation:
An occurrence report or incident report is a formal document/report is usually written by medical staff including nurses, practitioners and doctors to quote all the relevant information of the incidence such as date and time of occurrence, factual data such as condition of patient and medical care provided. This occurrence report is handed over to administrative tie authorities for taking necessary steps to prevent such incidents in future and also provide a proof for claiming insurance.
Hence, option D is correct
The study of life is called Biology
