Which of the Following Is a Commonly Used Complimentary Close

question 62

Multiple Choice

Which of the following is a commonly used complimentary close in today's business letters?

• A) Your humble servant
• B) Best regards
• C) Cheers
• D) Yours faithfully
• E) Sincerely yours

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Definitions:

Adult Stem Cells

Adult stem cells are undifferentiated cells found throughout the body after embryonic development that can differentiate into specialized cell types and divide to replenish dying cells and regenerate damaged tissues.

Proto-Oncogenes

Normal genes that can become oncogenes (cancer-causing genes) if mutated, typically involved in cell growth and division.

Oncogenes

Genes that have the potential to cause cancer, usually through mutations or increased expression leading to the uncontrolled growth of cells.

Totipotent Stem Cell

Cells that have the potential to differentiate into any type of cell in an organism, including embryonic and extraembryonic tissues.