Question 8

Be observed is NOT CORRECTLY USED in the sentence.

The phrase "be observed" is incorrectly used in the context of the sentence. The correct form should include a modal or auxiliary verb to convey the intended meaning of obligation or necessity.

A) Be observed

This option is incorrect because the phrase lacks a subject or a modal verb to indicate the necessity of observing confidentiality. A correct construction would be "should be observed" or "must be observed," which properly conveys the requirement to maintain confidentiality.

B) By

The word "by" is not present in the original sentence and does not apply here. Therefore, it is irrelevant to the correctness of the sentence structure.

C) Can be

"Can be" is a grammatically correct phrase that indicates possibility. If used in the sentence, it would imply that confidentiality has the potential to be observed, which is appropriate in certain contexts.

D) Should not

"Should not" is also a grammatically correct phrase. If included in the sentence, it would imply a prohibition against not observing confidentiality. However, it is not relevant to the original sentence's correctness.

Conclusion

The phrase "be observed" is definitively incorrect due to its lack of a modal verb or subject, which is essential for proper sentence structure. All other options either do not apply or present grammatically correct alternatives that do not directly address the error in the original sentence. Thus, "be observed" is the only option that fails to meet the standard of correctness required in this context.