Extrinsic. Extrinsic means not part of the essential nature. But intrinsic means belonging to essential nature.
Answer:
This is written in a passive voice and needs to be rewritten in an active voice and reduce length. After 12 weeks had passed, each mouse was randomly placed in one of two treatment groups; in all cases, a die was rolled (was rolled is a passive voice right now) by an experimenter for each mouse, and if it landed on an even number, the mouse was placed in the group that received a pill.
Answer: Bill, Is telling the story also known as 1st person point of view.
Explanation: When using terms like "I" "my" and "me" Bill is saying how he experienced things himself.
