A child stung by a bee experiences respiratory distress within minutes and lapses into unconsciousness. This reaction is probably mediated by() A: IgE antibody B: IgG antibody C: sensitized T cells D: complement E: IgM antibody

In his study Professor Smith asked the subjects ______ A: to keep truck of people who tend to forget things B: to report their embarrassing lapses at random C: to analyze their awkward experiences scientifically D: to keep a record of what they did unintentionally