Answer:
The correct answer is option B.
Step-by-step explanation:
Endotracheal suctioning is a essential part of the bronchial hygiene therapy. It is also known as ETT suction which is essential to clear secretion and free the airway patency.
The main aim of the ETT suction to remove excess amount of the secretion eliminate the secretion that leads in higher risk of spreading the TB to the EMT.
Thus, the correct answer is - option B.