12. When closing the razor, a barber must be careful the cutting edge does NOT strike the

Answer: C

Explanation:

A barber must be careful the cutting edge does NOT strike the heel.

When closing the razor, it is crucial for a barber to ensure that the cutting edge does not come into contact with the heel, as this could damage the blade and affect its performance.

A) grind.

The grind refers to the shape and angle of the blade's edge and is not a physical part of the razor that could be struck when closing it. Therefore, this option is incorrect as it does not relate to the potential damage that could occur.

B) handle.

The handle is the part of the razor that the barber holds and is not typically at risk of being struck by the cutting edge when closing the razor. This option is incorrect as it does not pose a direct threat to the blade's integrity.

C) heel.

The heel is the part of the razor blade that is closest to the handle and can easily be struck by the cutting edge when closing the razor. This contact can lead to damage to the blade, making this option the correct answer.

D) shank.

The shank is the part of the razor that connects the blade to the handle, and while it is a component of the razor, it is not where the cutting edge is likely to strike. Thus, this option is incorrect as it does not pose a risk to the cutting edge.

Conclusion

The correct answer is C) heel, as it is the specific part of the razor that can be negatively affected if the cutting edge strikes it during closure. Options A, B, and D do not accurately identify parts of the razor that pose a risk in this context, making them less relevant to the question's focus on blade safety.