In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
These terms imply two different distinct functions of the human mind. The active function _______________ the volitional, voluntary thinking. It is the conscious focusing of the mind _________ some mental problem. Banishing ________ the mind all thoughts and ideas _______ in harmony with your special subject of study implies Active Mentation. This function is used _________ the active, wide-awake man in his busy and energetic moments.