What type of communication coordinates actions between neighboring cells?
a. chemical signal
b. intracellular
c. intercellular
d. receptor

A. Chemical signal

Explanation:

Chemical signal is the type of communication which coordinates actions between neighboring cells .

This ability originated in single cells organisms and was essential for the evolution of multicellular organisms because after a cell receives a message, it is transferred across the plasma  membrane and  changes  are brought about within the cell in response to this message.

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Explanation:

C. digestion of food

Explanation:

in a chemical reaction the substance changes composition and the reaction is mostly irreversible.

option C: digestion of food is a chemical reaction which changes the composition of the food we eat. Enzymes and other substances react with the food and turn it into soluble substances which the body can easily use.

option A: breaking glass does not change the composition of the glass plane. Its a physical reaction

option B: freezing water changes the state of water but the composition is still     the same, its a physical reaction as well.

option D: cutting a tree does not change the composition of the wood. This, too, is a physical reaction.

option E: when a liquid evaporates it changes into a gas, which is a change in the state of matter (just like water into ice), this also does not change the composition of alcohol.