Read the passage and answer the questions that follow:

In an age of distractions, lack of concentration is a common problem. Like any other element of success, the power of concentration can be cultivated. Concentration means the power of giving undivided attention to something. Where there is interest, this attention follows automatically. If you are tied to a work that is not interesting, look for something of interest in it. Then you will be able to improve your concentration. Concentration can be developed as a habit by constant practice. You must persevere in trying to concentrate till you succeed. Habit is as strong a force for good as for ill. You should try to build up habits that are conducive to concentration. For instance, it helps to sit down to work at a definite time at a definite place. The law of concentration is that one cannot attend to two things at a time or that two or more things cannot be done with equal intensity simultaneously. A child reading a lesson as he watches a program on TV seems to be able to attend to both at the same time. The truth is his attention alternates between the two. Concentration occurs most naturally when both the body and the mind are relaxed. According to this view, the ideal means of concentrating would be to sit down in a relaxed posture. That is to say that the person trying to concentrate should not be keyed up and tense. For example, you should not begin reading a book while you are still tired from your day’s work. Wait a little, until both the body and the brain have recovered from the strain.