# 2pilihanWhat is the main advantage of using bioenergy over fossil fuels?Higher energy densityUnlimited supplyCarbon neutralityEasier transportation
# 3pilihanAnaerobic digestion primarily produces which type of biofuel?BioethanolBiodieselBio-oilBiogas
# 4pilihanWhich process is used to convert plant starches into bioethanol?TransesterificationFermentationPyrolysisGasification