I think it might be A but I'm not sure
Answer:
A brain ventricle is a cavity in the brain with an open channel leading to it.
Explanation:
The brain and spinal cord are encased and protected by three layers of tissue, all called meninges. The outermost layer is called the dura mater, and covers both the brain and spinal cord. On either side of this layer, where it crosses or penetrates into these organs, are two extensions that look like small tubes coming from under a tent. These extensions are called cranial nerves because they come out on either side of the head just below its most prominent part - hence "cranial".
Answer:
you should call the police
Explanation:
depending on what type of messages like things that are very worrying and contain things like your adress and hassment then i would say take it to the police but if they are just being perves and being annoying blocksss themmmm
