Salim can balance on his a book on his head while standing on one leg.
what is the conjuction

While

Explanation:

A conjuction is a word that is used to connect sentences or clauses to join phrases or words together.

The word while connects Salim can balance on his a book on his head to standing on one leg since it joins both ideas together by adding an additional fact to what Salim is doing while balancing the book.

adverb is the answer i believe.

the author is showing that it is the insatisfaction of basic needs that brings about the protests such as the strikes.if workers do not earn enough to buy food and feed their families and themselves in order to continue working, what is the use of working? besides, another message from the author is that of the owners of factories should be worried about ensuring their furure by having a second and third generation of workers in their industries.if they do not hear the workers demands, they will not have any more workers to make their pockets full.