Which of the following situations would most likely result in the stimulation of the man’s T lymphocytes and adaptive immune system?

A 30-year-old man has spent 5 hours on a cross-country flight seated next to a passenger who has been sneezing and coughing and the man has been inhaling viral particles periodically. Which of the following situations would most likely result in the stimulation of the man’s T lymphocytes and adaptive immune system? (Points : 0.4)
Presentation of a foreign antigen by a familiar immunoglobulin
Recognition of a foreign MHC molecule
Recognition of a foreign peptide bound to a self MHC molecule
Cytokine stimulation of a T lymphocyte with macrophage or dendritic cell mediation

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