They have began to grow apart, as their lives are changing and as they are growing older, they are growing further apart.
I would say the answer is B - Differentiating
Answer:inform the lab instructor and get instructions
Explanation:
If you come across a chemical in the laboratory which has been wrongly labelled, do not be quick to dilute it or take any further action. The laboratory instructor who may have prepared the reagent himself or has better knowledge about the reagent should be contacted immediately so that he/she can give you instructions about what to do with the wrongly labelled reagent.
I have written the answer in the comments i hope it will be helpful to you ......
potassium chloride from potassium hydroxide and hydrochloric acid