Option B directly queries network session data (xdr_network_sessions), specifically looking at destination ports 80 and 443 (common for web servers) and filtering on the 'ssl_version' field for 'TLSv1 ' or 'TLSv1.1'. This is the most accurate and direct way to detect insecure TLS versions at the network session level, which is critical for internet-facing services. Option A is too generic and relies on raw log content which might not be consistently structured. Option C focuses on process command lines, which may not always expose SSL version. Option D is closer but 'ssl_protocol_version' might not be a direct field in xdr_endpoint_events for network connections in the same way as xdr_network_sessions. Option E relies on specific cloud events which might not cover all web servers or environments.