C=C, carbon-to-carbon double bond is found in Canola.
Step-by-step explanation:
Canola oil, a vegetable oil, is extracted from the Brassicaceae species, the rapeseed and is a genetically modified product of rapeseed oil.
Canola oil consists of large amounts of polyunsaturated fatty acids (PUFA) with more than one carbon double bonds.
There are about 18 carbon fatty acids present in canola oil. It has high amounts of oleic acid and linoleic acid and less amount of erucic acid. It also high amounts of phytosterols, tocophenols, and polyphenols, which makes it healthy oil.
Butter being a saturated fat has carbon-to-carbon single bond.