Answer: C
Option A is INCORRECT. LightSail Backup is an invalid option.
Option B is INCORRECT. LightSail Copy is an invalid option.
Option C is CORRECT. “Upgrade to EC2” is the feature that allows customers to “create copy of their LightSail instance in EC2”. Using this feature, customers can choose from the available set of various options, including the pricing model offered by EC2.
Option D is INCORRECT. LightSail-EC2 snapshot is an invalid option.
Reference:
https://aws.amazon.com/lightsail/faq/
“What is upgrade to EC2”