An axenic environment is one a) in which microorganisms remain with the person throughout life. b) that is free of microbes. c) that is a source of contamination. d) in which microorganisms remain present only for a short time. e) contaminated by microbial toxins.

B) that is free of microbes.

Explanation:

An axenic environment -

It is the state of culture , where only a single type of organism , species or strain exist , without any contamination for any other species , is referred to as an axenic environment .

It is a important tool, which is required to study the parasitic organisms in any restricted environment .

Hence, from the question,

The correct option regarding axenic environment is  B) that is free of microbes.

answer; ( action training environment;

radiant energy is a form of kinetic energy only.(a)