Answer:
Its based the organism's observable traits
The correct option is B.
Communication between cells can be inter communication or intra communication. Inter communication refers to a type of communication in which message is transfer from a near or distant cell to another cell, while the intra communication form of message transfer is one in which a message is been passed across within a single cell.
In the option B above, a single cell is involved and that is an example of an intra communication. The other options are example of inter communication.
4 is true with question you asked
The rock will only displace the same amount of water that the rock's volume is.
1mL = 1cm^3
400mL = 400cm^3.