Directions for the following 8 (eight) items

Read the following eight passages and answer the items that follow. Your answers to these items should be based on the passages only.
 

Passage-3

Scientific knowledge has its dangers, but so has every great thing. Over and beyond the dangers with which it threatens the present, it opens up as nothing else can, the vision of a possible happy world; a world without poverty, without war, with little illness. Science, whateverunpleasant consequences it may have by the way, is in its very nature a liberator.