Final answer:
The cross-organization trust model would be used to connect the CAs of two organizations.
Step-by-step explanation:
To connect the Certificate Authorities (CAs) of two organizations, the cross-organization trust model would be used. In this trust model, the CAs from each organization establish a trust relationship with each other, allowing them to verify and issue certificates to users in both organizations. This model is commonly used in scenarios where organizations need to collaborate and share resources securely.