To justify a "protective search" (frisk) of a suspect during a detention, the officer must have a minimum suspicion of:

1) Probable cause to believe that the suspect was armed and dangerous.

2) Reasonable suspicion that the suspect was hiding evidence of a crime.

3) Reasonable suspicion that the suspect was armed and dangerous.

4) Reasonable suspicion that the suspect was committing, was about to commit, or had committed a crime.

To justify a "protective search" (frisk) of a suspect during a detention, the officer must have a minimum suspicion of probable cause to believe that the suspect was armed and dangerous. Thus, option 1 is correct.

A "protective search" or frisk is a limited pat-down of a suspect's outer clothing to check for weapons, and it must be justified by specific circumstances. In this case, the officer must have probable cause to believe that the suspect is armed and poses a danger to the officer or others. This standard is higher than just reasonable suspicion and requires a more concrete belief that the suspect is armed and dangerous. As such, option 1, which requires probable cause to justify a protective search, is the correct choice.