When you proofread your essay, you mark corrections for . a. missing ideas that would strengthen the essay.
b. typos and other careless errors.
c. needed transitional sentences among paragraphs.
d. all of these.

b. typos and other careless errors.

Explanation:

When you write the essay and want to proofread than the correction should be made with respect to the grammatical mistakes and the typos mistake that should not be there as it creates a bad impression on the reader who read your essay.

So at the time of proofreading kindly avoid this errors

Therefore in the given case, the option B is correct and the same is to be considered

answer; the above statement/question is ( true);

decentralization can the employees to get more involved in the business decision making