Answer:

C. roasting

Explanation:

Roasting - Roasting isn't just for potatoes - root vegetables, squashes and tomatoes all taste wonderful cooked this way. Roasting works by intensifying flavours and causing natural sugars to caramelise, creating a crisp outer coating and a tender centre. For the best results, preheat the oven to 220°C, gas mark 7 and if you're using root vegetables, preheat the cooking oil for a crisp finish. Cut large vegetables into even-sized chunks and toss in olive oil and fresh herbs, if you wish.