How can a citizen best understand public issues?

by thinking about the issues alone at home

by depending on the judgement of other citizens

by using multiple sources to gather and interpret information

by reading an article about the topic everyone seems to like

Good choice:

by using multiple sources to gather and interpret information.

Explanation:

Citizens should keep well informed about public issues to make a civic contribution to society´s well-being and the conduct of public affairs, and to take good decisions at the polls during elections. That´s the ideal situation. Citizens can keep adequately informed through education, checking media reports and social interaction.

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.