Question

Depending on the ease of extraction, membrane proteins can be classified as

Answer 1

Classification of membrane proteins based on ease of extraction
Based on the ease of extraction, the membrane proteins can be classified into integral proteins that are present inside the lipid bilayer completely and the peripheral proteins which are present towards the peripheral or outer parts of the lipid bilayer.
The peripheral proteins can be extracted easier than integral proteins.

Final answer
$\left(C\right)$ Integral and peripheral