Which method is used to reduce intracranial pressure? rotating the neck to the far right with neck support using a cervical collar keeping the head of bed flat extreme hip flexion, with the hip supported by pillows submit answer?

The answer should be Avoiding flexion of the neck with use of a cervical collar

Rotating neck will disrupt the vein that carries blood from the brain. Hip flexion will increase the pressure of abdomen and thorax region, makes more blood flow into the brain.  If the head using a pillow, the blood flow will decreases as the head has higher potential energy than the heart.