Factors such as low salivary buffering capacity, high incidence of bac

Factors such as low salivary buffering capacity, high incidence of bacteria, and an above-average plaque index contribute to an acidic environment around the tooth's enamel that may cause cavities, although this does not occur evenly in all cases.


A. contribute to an acidic environment around the tooth's enamel that may cause cavities, although this Incorrect

this refers to what? acidic environment or cavity

B. may cause cavities by contributing to an acidic environment around the tooth's enamel, but this cavity formation Correct

C. contributes to an acidic environment around the tooth's enamel that may cause cavities although this Incorrect

Factors plural, so contributes should be contribute

D. may cause cavities by contributing to an acidic environment around the tooth's enamel, but this cavity formation would not Incorrect

.......... would not does not................. - awkward and redundant

E. contribute to an acidic environment around the tooth's enamel that may cause cavities, although bacteria Incorrect

changes intended meaning

The answer is B. A, "this" is unclear. C, the subject is plural. It should be "contribute". D, "would not" is ungrammatical. E, it doesn't mean bacteria only.

Factors such as low salivary buffering capacity, high incidence of bacteria, and an above-average plaque index contribute to an acidic environment around the tooth's enamel that may cause cavities, although this does not occur evenly in all cases.


A. contribute to an acidic environment around the tooth's enamel that may cause cavities, although this - Incorrect - enamel does not cause cavity, factors cause cavities

B. may cause cavities by contributing to an acidic environment around the tooth's enamel, but this cavity formation- Correct

C. contributes to an acidic environment around the tooth's enamel that may cause cavities although this - Incorrect - enamel does not cause cavity, factors cause cavities

D. may cause cavities by contributing to an acidic environment around the tooth's enamel, but this cavity formation would not - Does not is not underline - repetition of auxiliary verbs.

E. contribute to an acidic environment around the tooth's enamel that may cause cavities, although bacteria - - Incorrect - enamel does not cause cavity, factors cause cavities