How can an app builder ensure that these opportunities are submitted into the approval process?

When an opportunity is closed date is pushed more than 30days, manager approval is required. An approval process is in place but reps frequently forget to submit for approval to run the process.

How can an app builder ensure that these opportunities are submitted into the approval process?
A . Change the entry criteria on the approval process to criteria are met and lock the record on initial submission.
B . Use a validation rule and an email alert to the manager requesting approval.
C . Submit the record for approval from an automated process.
D . Give the manager the "API Enabled" permission to permit approval responses by email.

Answer: C

Explanation:

To ensure that opportunities are submitted into the approval process when their close date is pushed more than 30 days, an app builder should use an automated process to submit the record for approval. An automated process can be created using tools such as Process Builder or Flow Builder, and it can define the criteria and actions for submitting a record for approval. [Source]