Organ means : A. the smallest discrete quantity of some physical
property

B. a structure in an animal specialized for some
function

C. the study and classification of animal populations

D. a scale that measures the mental ability of a
person

In biology, an organ (from the Latin "organum" meaning an instrument or tool) is a collection of tissues that structurally form a functional unit specialized to perform a particular function. Your heart, kidneys, and lungs are examples of organs.

Explanation:

Organ, in biology, a group of tissues in a living organism that have been adapted to perform a specific function. In higher animals, organs are grouped into organ systems; e.g., the esophagus, stomach, and liver are organs of the digestive system.

The answer is B that is the answer

it would be f

explanation:

i think its both a and b