The correct answer is C. ACM certificates are region-specific resources. This means you must create a separate certificate in ACM for each AWS Region where you want to use the certificate. Therefore, to meet the requirement of deploying SSL certificates to Application Load Balancers (ALBs) in three different AWS Regions, you need to create and import a certificate in ACM in each of those Regions. Option C correctly describes this process and ensures that the ALBs in each Region have the appropriate certificates.