A trait that is shared by both cardiac and smooth muscle in the body of a living organism is: B. involuntary.
What is a muscle?
A muscle refers to a type of tissue that is found within the body of an organism and it typically serves as a source of power and force to the organism.
In Science, an involuntary characteristics is a type of trait that is shared by both cardiac and smooth muscle in the body of a living organism.
Read more on muscles here: brainly.com/question/25285043
