Final answer:
Kinesis Data Firehose is a service provided by AWS for loading streaming data. It allows you to invoke a Lambda function to transform data before delivery.
Step-by-step explanation:
Kinesis Data Firehose is a service provided by Amazon Web Services (AWS) that is used for loading streaming data into data lakes, data stores, and analytics tools. When it comes to data transformation, option B is the correct answer. Kinesis Data Firehose allows you to invoke a Lambda function to transform data before it is delivered to a destination. This means that you can modify the format or structure of the streaming data according to your specific needs.