Final answer:
Dendritic cells migrate to the lymph nodes after ingesting antigens to present them to T lymphocytes, initiating an immune response. Therefore, the most appropriate correct option is B.
Step-by-step explanation:
When dendritic cells ingest an antigen, they migrate to the lymph nodes, where they present the antigen to T lymphocytes. The lymph nodes serve as a hub where dendritic cells, as antigen-presenting cells (APCs), capture and process antigens. They then inform nearby lymphocytes about potential pathogens. This process is crucial for the activation of T cells and the initiation of an adaptive immune response.