To test neurological disease, a doctor inserts a needle into the subarachnoid space of the patients spine. what is the doctor trying to collect?

That is pretty  

The question may be incomplete (there are not the possible answers), but according to the scenario, kaley and her coworkers could be in a humanitarian organization like red cross (in the us or in other countries). it's an organization which organizes health and safety services, disaster services, and blood donations.

True now i need to write random stuff because i need 20 characters lol

The answer is improved wirh resistance training body compisition