Certified Clinical Medical Assistant Exam Practice Question

Correct Answer: B

Rationale: Option B introduces contaminants to a sterile field because reaching over it can transfer bacteria from the person's hands or clothing, compromising sterility.

Option A, holding a package opening face up, is safe as long as the package remains sealed and uncontaminated until opened.

Option C, placing a bowl in the middle of the sterile field, does not introduce contaminants if the bowl is sterile and handled properly.

Option D, donning surgical gloves, is a necessary practice to maintain sterility, provided the gloves are put on correctly and are sterile.