Final answer:
The medical assistant should use the autoclave technique for sterilization after an invasive procedure due to its effectiveness in killing microorganisms.
Explanation:
Autoclave is the technique that the medical assistant should use for sterilization after an invasive procedure. Autoclaves rely on moist-heat sterilization to raise temperatures above the boiling point of water, effectively sterilizing materials and equipment. They are considered the most effective method of sterilization, capable of killing all forms of life, including viruses and spores.
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