What mechanism allows strict anaerobes to grow in the cervices and areas between the teeth when plaque is present?
A) A low oxidation-reduction potential occurs at the tooth surface under the plaque.
B) The bacteria secrete sugar to nourish the strict anaerobes.
C) The normal flora secrete antibiotics to kill all the other bacteria and allow the strict anaerobes to thrive.
D) The plaque-causing bacteria secrete an alkaline fluid and change the pH around the tooth.
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