The best answer would be: That by using a new toothbrush you get the best results from group 3. It would appear that a used toothbrush sterilized or not, is less effective that a new one.
Answer:
A court of record is a <u>trial court or appellate court</u> in which a record of the proceedings is captured and preserved, for the possibility of appeal. A court clerk or a court reporter takes down a record of oral proceedings.
Explanation:
GOOGLE