We have that the amount of the charge q is

From the Question we are told that
Force 
Velocity 
Angle 
Magnetic field 
Generally, the equation for Force F is mathematically given by



In conclusion
The amount of the charge q is

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NaHCO3
That is the formula for baking soda
Use the equation I=V/R where I is current and V is the voltage plus R is the resistance so when voltage is the highest and resistance is lowest the current is the highest
Answer:
The answer is A ) High pressure
I hope this helps you :)
please let me know if I am wrong