Google Cloud commitment to keep the data secure and private:
1. Org owns the data and not Google
2. Google does not sell data to 3rd parties
3. All customer data is encrypted by default
4. Google Cloud guards insider against your data
5. No backdoor access to any govt. entity
6. Google's privacy practices are audited against international standards

Bigtable is the best suited for time series data. It also has high read-write throughput and ability to scale globally.

An effective data governance program helps organizations manage data quality, privacy, and security, ensuring compliance with regulations and optimizing the value derived from data. This approach involves defining policies and procedures for data access, usage, and retention, which improves cost control and strengthens regulatory compliance.
Option B: Establish an effective data governance program is correct because it provides a comprehensive framework for managing data, optimizing value, controlling costs, and ensuring compliance.
References:
* Google Cloud: Data Governance and Compliance Solutions
* Google Cloud Data Management: Best Practices for Data Governance

Explanation
Firebase Cloud Messaging:
Firebase Cloud Messaging (FCM) is a cross-platform messaging solution that lets you reliably send messages at no cost.
Using FCM, you can notify a client app that new email or other data is available to sync. You can send notification messages to drive user re-engagement and retention. For use cases such as instant messaging, a message can transfer a payload of up to 4000 bytes to a client app.
Key capabilities of Firebase Cloud Messaging:
Send notification messages or data messages: Send notification messages that are displayed to your user. Or send data messages and determine completely what happens in your application code.
Versatile message targeting: Distribute messages to your client app in any of 3 ways-to single devices, to groups of devices, or to devices subscribed to topics.
Send messages from client apps: Send acknowledgments, chats, and other messages from devices back to your server over FCM's reliable and battery-efficient connection channel.