Service in GCP used to manage and store secrets

Question:
In a live production environment, which service in Google Cloud can be used to manage and store secrets such as API keys and passwords?

1. Identity and Access Management (IAM)
2. Cloud Storage
3. Secret Manager
4. Cloud KMS

Answer:
C - is the correct answer. Secret Manager is a service provided by Google Cloud that allows you to securely store and manage secrets, such as API keys and passwords, in a central location