Universal Containers (UC) is considering implementing a minor change policy for a series of low-risk user stories that are commonly received by the UC admins. The policy would allow admins to make these changes directly in production. UC does not have continuous integration/continuous delivery (CI/CD) in place.
Which three best practices should the architect suggest UC follow for their new change policy? (Choose three.)

Universal Containers has discovered a Sev0 defect in production. Tens of thousands of records will be created with incorrect data in minutes, producing significant brand damage as a consequence. The Salesforce administrator has suggested that the defective text field be replaced with a new picklist field directly in production. The page layout will be modified so that the text-field is removed and the new picklist field added.
What should the Salesforce architect advise?

The release will be deployed over a weekend, one week after Salesforce updates the production environment (e.g., from Winter to Spring). UC has found that a full sandbox refresh can take several days. What should the architect suggest as an optimal deployment plan?

Cloud Kicks is considering using an automated testing tool to help manage deployments between environments.
When should the architect recommend the use of an automated testing tool?

Universal Containers CUC) has developed extensions of Salesforce Service Cloud for the use of its customer service teams using the change set development model.
Recently, UC acquired a company that develops extensions of an AppExchange app. The development team of the acquired company uses the org development model. The Universal Containers CTO wants both teams to work on a single org and follow the same set of processes.
Which development model should the architect recommend to be used by the consolidated development team?