Explanation
Gateway API is not an example of a Check Point API. Check Point APIs are interfaces that enable interactions with Check Point products using automation scripts or external applications. The examples of Check Point APIs are Management API, OPSEC SDK, Threat Prevention API, Identity Awareness Web Services API, and others4. Gateway API is not a valid Check Point API name. References: Check Point R81 Security Management Administration Guide, Check Point APIs

The SandBlast Agent is designed to prevent malware from spreading within the network if it enters an end user's system. SandBlast Agent is a lightweight endpoint security solution that protects devices from advanced threats such as ransomware, phishing, zero-day attacks, and data exfiltration. SandBlast Agent uses various technologies such as behavioral analysis, anti-exploitation, anti-ransomware, threat emulation, threat extraction, and forensics to detect and block malware before it can harm the device or the network. The other options are either not the main purpose or not the functionality of SandBlast Agent.