Final answer:
The class I major histocompatibility (MHC) molecule of infected cells must undergo the process of antigen presentation to be detected by a T cell, involving presenting pathogen's antigens along with an MHC molecule on the surface of antigen-presenting cells.
Step-by-step explanation:
In order to be detected by a T cell, the class I major histocompatibility (MHC) molecule of infected cells must go through the process of antigen presentation. This complex immunological process involves antigen processing and presentation by professional antigen-presenting cells, such as dendritic cells, macrophages, and B cells. After internalizing and processing the pathogen, these cells present the pathogen's antigens in conjunction with the MHC molecule on their surface. T cells can then recognize and respond to these antigen-MHC complexes. The correct answer to the student's question is D) antigen presentation.