Answer:
Angular displacement will be 4.48 rad
So option (a) will be correct option
Explanation:
We have given initial angular acceleration 
Angular acceleration 
Time t = 7 sec
We have to find the angular displacement
We know that angular displacement is given by

So option (a) will be correct option
B was fired first and just trust me
Distillation, Magnetism, Filtration, Crystallization, Extraction,
We know, work done = Weight * Displacement
w = 3.76 * 2
w = 7.52 J
In short, Your Answer would be: 7.52 Joules
Hope this helps!
the mean of the data set is 6ml