An amino acid, such as glycine, that is found in the interior of a molecule after the polypeptide folds to a three-dimensional shape, will most likely have what defining characteristic?
a. unpaired electrons on the terminal r groups
b. one or more terminal oxygen atoms
c. one or more terminal nitrogen atoms
d. an arrangement of hydrocarbons

The correct answer is option d. "an arrangement of hydrocarbons".

Explanation:

Glycine is the simplest amino acid in terms of structure, as it has a single hydrogen atom in its side chain. A glycine found in the interior of a molecule after the polypeptide folds most likely will have the defining characteristic of being an arrangement of hydrocarbons. The interior of a polypeptide is defined by its hydrophobic nature, a non polar amino acid as glycine would contribute to the hydrophobicity by behaving as an arrangement of hydrocarbons.

The options were  
a) Eltrobopag (Promacta) 
b) Epoetin alfa (Epogen) 
c) Filgrastim (Neupogen) 
d) Sargramostim (Leukine) 
The answer is b) Epoetin alfa (Epogen) 
In human body Erythropoietin is responsible for generation of red blood cells but due to some failure or medicine when amount of Erythropoietin lowers in the body Epoetin alfa (Epogen) is injected externally in the body which signals the bone marrow to produce more Red Blood Cells