Question

Which of the following sentences demonstrate verb tense consistency?

There is no proof that bottled water is healthier than tap water.

There is no proof that bottled water was healthier than tap water.

There has been no proof that bottled water is healthier than tap water.

There is no proof that bottled water were healthier than tap water.

Answer 1

Answer:

A.

There is no proof that bottled water is healthier than tap water.

Explanation:

A is all present tense.