Answer:
A. There was neither a violation of privacy nor a breach of confidentiality
Explanation:
The researcher agreed with the clause stating that no information that could identify the research participants should be disclosed. The file that was stolen with the researcher's car only contains numerical graphs added to the research participants, but does not have any documents, nor any information that makes it possible to identify the participants.
With this, we can state that in this situation there was no violation of privacy or breach of confidentiality.