"H2" is the one among compound the following choices given in the question that is a molecule. The correct option among all the options that are given in the question is the third option or the penultimate option. The other options are all salts. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.
Answer:
the carbohydrates in cotton are mainly cellulose, but our body does not possess the proper enzymes to process cellulose, no we don't eat cotton on in our daily diet.
Yes because plants are a source of food for some animals