Which of the following are valid event sources that are associated with web access control lists that trigger AWS WAF rules?

Explanations:

Amazon S3 static web hosting is not an event source associated with AWS WAF rules. AWS WAF does not directly integrate with S3 for triggering rules.

Amazon CloudFront distribution is a valid event source for AWS WAF rules. AWS WAF can be associated with CloudFront to filter incoming HTTP/S traffic.

Application Load Balancer (ALB) is a valid event source. AWS WAF can be configured to protect ALBs from malicious requests by filtering traffic.

Amazon Route 53 is a DNS service and does not directly trigger AWS WAF rules. AWS WAF operates at the HTTP/S layer, not at the DNS resolution layer.

VPC Flow Logs capture network traffic within a VPC, but they do not trigger AWS WAF rules. WAF is focused on HTTP/S traffic rather than VPC network traffic.