Which quality would make the question “what will make cows produce more milk? ” a good scientific question for a biologist to investigate?
a. it is about living things and is testable.
b. it will consumers save money.
c. it will lead to new technology to gather milk.
d. it is a question that can have many answers.

The correct answer will be option-A.

Explanation:

A biologist is a person who studies the biology or the living organisms from microbes to animals and plants.

A scientific question is a question that can explain the natural phenomenon and have the real answers which could be tested.

In the given question, a question was asked about how milk production in cows increases? This question is a scientific question as the question includes a cow which is a living organism as well as a parameter which could be tested through experiments.

Thus, option-A is the correct answer.

answer;

-vessels in the chest

the diagnosis of angina pectoris literally means "vessels in the chest"

explanation;

-angina pectoris is the medical term for chest pain or discomfort due to coronary heart disease.it is the chest pain due to an inadequate supply of oxygen to the heart muscle. the pain is typically severe and crushing, and it is characterized by a feeling of pressure and suffocation just behind the breastbone.

agina pectoris is caused by reduced blood flow to your heart muscle. the blood carries oxygen, which the heart muscle needs to survive. when the heart muscle isn't getting enough oxygen, it causes a condition called ischemia