Multiple choice

Directions: Choose the most grammatically correct replacement for the underlined part. If ther is no error, choose that repeats the inderlined part.

Scientists have discovered that with genetic engineering, they would manipulate DNA so as to change hereditary traits.

  1. they can manipulate DNA so as to change hereditary traits.

  2. they will be able to manipulate DNA so as to change hereditary traits.

  3. they would manipulate DNA so as to change hereditary traits.

  4. they could manipulate DNA so as to change hereditary traits.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The only mistake in the sentence is the usage of “would” with plural form. The sentence is in past tense, hence 'can' is also incorrect, and therefore (D) is the correct option.