PTSD, or post-traumatic-stress-disorder. After experiencing the trauma of being trapped in an elevator, this is her brain's way of reminding her of the previous danger she faced even if there is no danger present at that time.
        
             
        
        
        
As "Technical obsolescence".
Technical obsolescence<span> is the point at which an item is not in fact
better than other comparative items. For instance, you may purchase the most
recent iPhone, which has the most efficiency and biggest screen of any iPhone
accessible. Technical obsolescence for the most part happens when another item has been made to
supplant a more established adaptation.</span>
 
        
             
        
        
        
Answer: Relative Size
Explanation:
Relative Size is a very important monocular cue for depth perception. It works in tandem with the principle of size consistency which posits that closer objects project a larger image on the retina than further objects. 
So essentially closer objects are larger than further objects for depth perception. 
This is why near objects in Tom's photographs appear much larger than those on the opposite shore of the cove.
 
        
             
        
        
        
Answer:
B. Obtain a waiver of documentation of informed consent
Explanation:
According to my research on legal proceedings during an experiment, I can say that based on the information provided within the question the best thing would be to obtain a waiver of documentation of informed consent. This waiver is a document signed by the Institutional Review Board (IRB), which provides proof that the participants know exactly what they are signing and that everything was done legally and according to procedures.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
 
        
             
        
        
        
Answer:
d. sleep rebound        
Explanation:
Sleep rebound: The term sleep rebound is also referred to as REM rebound and is defined as an increasing and lengthening depth and frequency of an individual's eye movement i.e, REM sleep that tends to occur or happen after a long period of an individual dealing with sleep deprivation. If an individual is being prevented from encountering REM sleep then there is a chance of taking less time to acquire REM state than usual.
In the question above, Hamid may be experiencing sleep rebound.