D. None of the above
Glucagon increases blood glucose levels, hydrocortisone is literally anti-itch stuff, and growth hormone counteracts insulin; it doesn't lower blood glucose levels
The correct answer for the given question above would be option A. The most appropriate example of denaturation of protein is egg albumin, which is a translucent fluid, changes to opaque white solid after boiling. Protein is always present in egg and the albumin in the egg is denatured to get this white opaque substance.
They can make friends there, and feel like they are worth talking to, which makes them feel happier.
Also, when getting a question right, or maybe getting a good grade on a worksheet, can make them feel smart, which also makes them feel happier.
Hope this helps, and happy studying~!
~{Dunsforhands}