The addition of a group that does not use the drink additive but adds a similar-looking substance that they think is the additive would dr. bloedorn address what threat to internal validity?

The similar looking substance is acting as a placebo. In other words, a substance that will not have any therapeutic effects on the patient.

A placebo is currently used in the treatment of people with hypochondria, which is a psychological condition in which a person is under a constant belief that he or she is having an illness.

By adding this alternative substance (or placebo), Dr. Bloedorn is trying to address the individual's condition of hypochondriasis.

the fourth amendment protects:

"the right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."  

so this would mean the denial to search and seizure without warrant or permission.

answer:   c.

it was not against the chinese government.

explanation: