I believe the answer is B.
Shield Volcanoes produce extremely fluid lava when they erupt. Not sure if that's the answer you're looking for
According to Charles Darwin's Theory of Origin of Species, an organism either develops or losses an attribute according to its adaptation to survive in a competitive environment. This is same with humans or salamanders. The loss or the retention of limbs may indicate the survival purposes of the species.
Its C
On large-scale cheese production, using bought-in cultures is essential because when the milk is coming from multiple farms, often collected over several days, and is pasteurised, the cheese-maker needs to repopulate the milk with lactic acid bacteria in order for it to acidify and to prevent 'bad' pathogenic bacteria