When addressing an unknown audience in a cover letter, what type of tone
should a writer have?

Explanation:

The question is not full as it is missing the options. Possible options to this question could be theses

or these

The answers based on these options are polite and respectful.

When writing a cover letter, we don't know who the audience is and we are usually applying for a position or a job we want to have. I

n this case, we should always be formal, polite and respectful, not using personal tone, slang or casual attitude.

While grammar and structure of the cover letter are of great importance as well, they are not considered the tone of the letter and can't be answered in this question.

either online or traditional classroom can work for students. which is better will depend on students and teacher. students may have trouble following a lesson in classroom while they can study at their own pace online. other students may have trouble staying focus on their own in online classes. teachers are more used to classroom teaching but they may also be more worry about their jobs teaching online classes and work harder.

c. spelling errors, if not i am so sorry. but i hope it !