Reading Comprehension Passage: 31 | 100 RC`s for Government Exams Preparation - Bank Exams PDF Download

Not knowing the art of action, we have been master artists in doing the wrong thing. The totality of activity will bring the country to a wrong end indeed.
The 2nd last sentence of the 2nd paragraph of the passage says it all. These are our wrong deeds which will cause the country to perish. 
Option C hence is the correct answer. 

Everyone of us is a vehicle. We know how to go forward. The point is that intellect is very powerful and everyone is driving but nobody seems to know how to control the mental energy and direct it properly or guide it to a proper destination.
We can clearly infer from the last few sentences of the last paragraph of the passage that the author’s chief concern is regulation of energy in a proper direction.
Option D hence is the correct answer.

Do not allow this energy to be dissipated in the futile memories of past regrets or failures nor in the imagined sorrow of the future or the present and thus bring the entire energy focussed into activity. That is the highest creative action in the world outside. Thereby the individual who is till now considered most inefficient finds his way to the highest achievement and success.
The writer clearly suggests from the last few words of the 2nd sentence of the 1st paragraph that 'brining all the energy into activity' is crucial to achieve success. 
Option C hence is the correct answer.

because we have already trained the mind wrongly to such an extent that we have become perfect in imperfection.
Option D is clearly the right answer.

.....having discovered a great goal, surrender yourself to that goal and act towards it drawing your inspiration from that goal whereby you will get a new column of energy.
The last few words of the first sentence clearly states that we derive new column of energy from the goal that we discover or set for ourselves.
Option B hence is the correct answer.