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 given alternatives.

The greatest improvements in the productive powers of labour, and the greater part of the __(1)__ (skill) and judgment, with which it is anywhere directed, or applied, seem to have been the effects of the division of labour. The effects of the division of labour, in the general business of society, will be more easily __(2)__ (understood), by considering in what manner it operates in some particular manufactures. It is commonly supposed to be carried furthest in some very __(3)__ (minor) ones; not perhaps that it really is carried further in them than in others of more importance: but in those manufactures which are __(4)__ (meant ) to supply the small wants of but a small number of people, the whole number of workmen must necessarily be small; and those employed in every different branch of the work can often be collected into the same workhouse, and placed at once under the view of the __(5)__ (observer).

In those great manufactures, on the __(6)__ (opposite), which are destined to supply the great wants of the great body of the people, every different branch of the work employs so great a number of workmen, that it is impossible to collect them all into the same workhouse. We can __(7)__ (rarely) see more, at one time, than those employed in one single branch. Though in such manufactures, therefore, the work may really be divided into a much greater number of parts, than in those of a more insignificant nature, the division is not near so __(8)__ (obvious) and has accordingly been much less observed.