One principal function of the Class I and Class II major histocompatibility complex S proteins is to

Q. One principal function of the Class I and Class II major histocompatibility complex S proteins is to

A.            transduce the signal to the T-cell interior following antigen binding

B.            mediate immunoglobulin class switching

C.            present antigen for recognition by the T-cell antigen receptor

D.            stimulate production of interleukins

Answer: present antigen for recognition by the T-cell antigen receptor