What contributions did samurai make to Japanese society?(3 or 2 sentences plzzz)

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

Population parameters are difficult to calculate due to

The child uses the parent as a base from which to explore her world in which attachment style?