A woman eats a ham dinner not realizing the ham has gone bad. She then becomes very sick from the ham. After that incident, even the smell of ham makes her sick to her stomach. Using classical conditioning, which part of this scenario is the unconditioned response

Awaiver of the requirement for documentation of informed consent may be granted when: the investigator has no convenient place to store signed consent forms separate from the research datathe only record linking the subject and the research is the consent document and the principal risk is a breach of confidentiality.potential subjects might find some of the research questions embarrassing, personal, or intrusivethe subjects are literate in their own language; however, they do not read, write, or speak english