Heat from the earths core causes movement in the mantle, which results in movement on the crust.
        
             
        
        
        
Because mutations do not always result in an amino acid change.
        
             
        
        
        
I think it’s a, hopefully you get it right!
        
                    
             
        
        
        
Answer:
First, the options:
A. Midazolam
B. Ketamine
C. Nitrous Oxide
D. Bupivacaine
The ANSWER is A. 
A. Midazolam
Explanation:
A. Midazolam✔
Midazolam is mainly used for amnesia or sedation in many diagnostic, therapeutic, and endoscopic activities or procedures. 
B. Ketamine ❌
It has higher risk of side effects. 
C. Nitrous oxide ❌
It won't be preferable for this case, since it can not be breathed in during a bronchoscopy. 
D. Bupivacaine❌
This is solely for local anesthesia.