Which of the following is/are a highly precious resource?

Directions: Read the following passage and answer the given question.

We can see our forests vanishing, our water-powers going to waste, our soil being carried by floods into the sea; and the end of our coal and our iron is in sight. But our larger wastes of human effort, which go on every day through such of our acts as are blundering, ill-directed; or inefficient, a lack of “national efficiency,” are less visible, less tangible and are but vaguely appreciated.
We can see and feel the waste of material things. Awkward, inefficient or ill-directed movements of men, however, leave nothing visible or tangible behind them. Their appreciation calls for an act of memory, an effort of the imagination. And for this reason, even though our daily loss from this source is greater than from our waste of material things, the one has stirred us deeply, while the other has moved us but little.
As yet there has been no public agitation for “greater national efficiency”, no meetings have been called to consider how this is to be brought about. And still there are signs that the need for greater efficiency is widely felt. The search for better, for more competent men, was never more vigorous than it is now. And more than ever before is the demand for competent men in excess of the supply.
What we are all looking for, however, is the readymade, competent man; the man whom some one else has trained. It is only when we fully realise that our duty, as well as our opportunity, lies in systematically cooperating to train and to make this competent man, instead of in hunting for a man whom someone else has trained, that we shall be on the road to national efficiency.