[The sentence uses a comma before 'however', which is incorrect. A comma cannot join two independent clauses - this creates a comma splice.]

[When using a conjunctive adverb like 'however', 'yet', or 'moreover' to join two independent clauses, a semicolon must be used instead of a comma.]

[While 'however' and 'yet' are both conjunctive adverbs, 'yet' is a coordinating conjunction that can follow a comma when joining independent clauses. Since we're using a semicolon, either word works, but 'yet' is more concise and direct for contrasting ideas.]

The error is corrected by replacing the comma after 'productivity' with a semicolon and replacing 'however' with 'yet', making the sentence: "The data suggests that remote working has increased productivity; yet employees are demanding more flexible benefits." Therefore, the answer is D.

The main subject of the sentence is "The CEO" (singular noun).

The phrase "along with her senior management team" is a prepositional phrase that modifies the subject but does not change the verb agreement.

Since the main subject "CEO" is singular, the verb must be in singular form. The singular form of "to be" in present tense is "is."

The correct answer is A) is, because the main subject "The CEO" is singular, and prepositional phrases introduced by "along with" do not change the subject-verb agreement.

Obfuscate means to make something unclear, confusing, or difficult to understand.

Obscure is the best synonym as it also means to make dim, unclear, or hard to perceive.

Clarify, illuminate, and simplify all represent opposite meanings that would make things clearer rather than murkier.

Propitious means giving or indicating a good chance of success; favorable or advantageous.

Auspicious carries the same meaning, referring to circumstances that suggest future success.

Unfavorable, ominous, and disastrous all represent negative or adverse conditions, making them antonyms rather than synonyms.

Sanguine means confidently optimistic or positive in an assessment, especially in an unjustifiably positive way.

Optimistic is the appropriate synonym, meaning hopeful and confident about the future.

Pessimistic, doubtful, and skeptical all represent negative or uncertain outlooks, contradicting the meaning of sanguine.

Verbose=too many words. Antonym=Concise.

Accommodate - double c, double m.

Repeal = officially cancel a law.

Polyglot = speaks multiple languages.

Frugal=spending carefully. Antonym=Extravagant.