Complete the following paragraph
with suitable adverb from the options given below :
It is ____ said that if we do not take pains, we gain nothing. ____ life without work is meaningless. Those who sit ____ or look for outside help invite ____ their ruin. The sun, moon and other heavenly bodies ____ work. ____, it is clear that work is a must for our life. ___?___ say you cannot take pains.
Sir why D option is correct? Please explain.