Based on the fact that the defense attorney looked into the background of the case in order to help the case of his client, these were C. Pretrial motions.
Pretrial motions are those things that happen in a case of law before the case gets to court to ensure that the accused has a fair trial and that justice may be served.
There are several pretrial motions such as the one where an attorney gathers evidence for a case so that they can present their argument in court with proof.
Collecting evidence involves getting the evidence of the opposing party, interviewing victims or experts, and researching on the laws governing a kind of case.
These are what the defense attorney was doing so this is a pretrial motion,.
Find out more on pretrial motions at https://brainly.com/question/7435625
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