Unit 2: Government intervention to overcome the market failure associated with litter

This BBC clip shows what is happening in Scotland to try and alleviate the problem of people dropping litter

< http://www.bbc.co.uk/mediaselector/check/player/nol/newsid_6680000/newsid_6688400?redirect=6688463.stm&news=1&bbwm=1&nbwm=1&bbram=1&nbram=1 >

a) What is the market failure that litter dropping represents?
b) Which of the 3 approaches open to government to overcome market failure is being used here?
c) What drawbacks are there to using this method?
d) Evaluate how successful you believe this approach will be in tackling this specific example of street littering