How is the word weight defined

Someone pleas asap so what you have to do is for each article you have to find the 1) key ideas an d 2) the key quote that's it. ( attached a link to the fille)

Rational ignorance suggests that a. voters are ignorant on issues that are not of special interest to them b. voters do not pursue information about issues before voting c. low voter turnout is due to a lack of understanding of the platforms of each political party d. voters are uninterested in the electoral process

Humans are the only animals capable of communication