According to best practices, what is an acceptable way of validating an application's state before...

Consider applying validation measures which include using extra activities that wait for the desired application state before other interactions.

Use as many hardcoded delays as needed to ensure the application has reached the desired state before proceeding with other interactions.

Validate an application's state by implementing hardcoded delays before proceeding with other interactions.

Avoid waiting for the desired application state and directly proceed with other interactions.