This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
The process of primary colonizing bacteria adhering to tooth surface providing new receptors for attachment other bacteria is known as 
Select and explain. 
A. Attachment, B. Translocation, C. Co-adhesion, D. Biofilm
C: Co-adhesion
Answer: C: Co-adhesion 
Explanation: None