Answer:
an
Explanation:
The word idea starts with a vowel and the adjective needed shouldn't also end with a vowel. And in this case, you can't use a because it's a vowel. So, you use an.
Answer:
It's difficult to predict the impact of new policies and procedures.
Explanation:
Evaluating the options :
In option A, Incorrect spelling of policies
In option B ; No spelling error and the tension s are perfect
In option C ; It's has no apostrophe and policies is incorrectly written
In Option D ; ':' is used inappropriately
Hence, option B is the correct choice.
I believe the answer is D. Lack of Parallel Structure.
