Which of the following best finishes the sentence.

a) When someone decides to allocate their time between labour and leisure, the opportunity cost of leisure is due to the fact that:

• Leisure decreases the marginal utility of consumption
• leisure reduces how much tiem life the individual has for consumption
• most lecture activities are costly
• every hour of lecture is san hour not earning labour resources

b) Assuming the person has a non-labour income, when the wage decreases, the budget constraint:

• Stays the same
• Rotates counter-clockwise around its vertical intercept
• Rotates counter-clockwise around its vertical intercept
• rotates clockwise around its vertical intercept
• rotates clockwise around its horizontal intercept
• moves in a parallel shift inwards