Which protein serves as a chemical messager
a. hemoglobin
b. actin
c. myosin
d. insulin

Its insulin as it helps to convert the glucose and its a helper of the pancreas.

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added