Ibrahim's blood report confirmed very low levels of cholesterol. which process would be hampered due to this?

the process of his brain, liver, and digestive system
There are two components of cholesterol, LDL, and HDL.  A low LDL cholesterol is desirable but not too low while a low HDL cholesterol is bad because it is the one that protects us from heart disease.  If Ibrahim's blood report confirmed very low levels of cholesterol, he has some health problems like cancer, stroke, depression, and anxiety. Low levels of HDL could undermine his body in other areas and hamper the process of his brain, liver, and digestive system.

answer (c) by causing social withdrawal;