The Activation of Helper T Cells Is Likely ________

Multiple Choice

The activation of helper T cells is likely ________.

A) when an antigen is displayed by a dendritic cell
B) when a cytotoxic T cell releases cytokines
C) when natural killer cells come in contact with a tumor cell
D) in the bone marrow during the self-tolerance test
E) when B cells respond to T-independent antigens