In a living organism, what is an organ? A. a group of similar cells that perform a common function
B. a structure composed of a number of tissues that work together to perform a specific task
C. the shell or skin of an organism
D. functional unit, or building block, of all organisms; smallest unit that can carry on the activities of life

An organ is a group of tissues in a living organism that has a specific form and function. Organs are grouped together into organ systems. Organ systems perform a specific task.

Explanation:

B

Explanation: An organ is a differentiated part of the human body, formed by different tissues, that maintains its structure, vascularisation, and capacity to develop physiological functions with a significant level of autonomy.

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.

answer; heredity;