The Data Import Wizard allows importing data while adhering to Salesforce's sharing and security model. By setting field-level security, sensitive fields can be hidden from unauthorized users.
Other Options:
Option A: Encrypting data externally is unnecessary since Salesforce has built-in security features.
Option B: Using the Data Loader with Apex adds unnecessary complexity.
Option D: The Salesforce CLI does not provide direct data import capabilities with security settings.
Data Import Wizard Documentation