Answer:
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
