Relative Insensitivity to Delayed Rewards Helps Explain Why It Is

Relative insensitivity to delayed rewards helps explain why it is:

A) common for people to choose the better of two immediate options.
B) common for most people to save their discretionary income,rather than spend it.
C) difficult for public officials to mobilize their efforts to thwart an imminent terrorist attack.
D) difficult for people to change their behaviour to address global warming.