One solution to the problem of our overflowing landfills is to burn plastic objects instead of burying them. What are some advantages and disadvantages of this practice?

(a) disadvantage: toxic air pollutants; advantage: reduced landfill volume

(b) disadvantage: loss of a vital petroleum-based resource;

advantage: generation of electricity

(c) disadvantage: discourages recycling; advantage: provides new jobs

(d) all of these