Final answer:
The truth value of Sierra King's manicure time cannot be determined without context. The nail bed refers to the skin beneath the nail plate, so the statement is false. Nails are mainly composed of the protein keratin.
Step-by-step explanation:
Regarding the true or false statement about the amount of time Sierra King allots for a manicure, the question does not provide enough information to determine a true or false answer. Without a specific context or reference to Sierra King's practices, we cannot verify the accuracy of the statement.
The nail bed does not refer to the middle portion of the hard nail plate; rather, it is the area of skin beneath the nail plate. Thus, the statement is false.
Nails are primarily composed of a protein. The correct answer is C. Keratin, which is the main component of nails and gives them their strength and structure.
Health Risks of Professional Manicures or Pedicures
Professional nail technicians are usually required to undergo training from a cosmetology school and must obtain a license to practice. This typically involves completing a certain number of hours of practical training and passing both written and practical exams. The requirements can vary by state or country.