Explanation:

📦 Why "Products" Can Be Imported via Business Manager
In Salesforce B2C Commerce, the Merchant Tools > Import & Export module is specifically designed for importing and exporting structured business data like:
Products
Categories
Price books
Inventory lists
Customer data
Promotion configurations
Catalogs
You can import product data using XML, CSV, or Excel formats via:
Merchant Tools > Products and Catalogs > Import & Export
This allows bulk creation, update, or deletion of product attributes, assignments, online status, availability, etc.

❌ Why A & B Are Incorrect
A. Images and other static assets
Managed via WebDAV, not Business Manager’s Import & Export — images are uploaded to specific folders, not imported as objects

B. Content slots
These are part of content assets or page designer structures, and aren’t directly importable through this module — managed via Content tools or custom deployments

🔗 Reference:
“Use Import & Export to load product catalogs, inventory, and business configurations. Static assets like images are uploaded separately via WebDAV.” — Salesforce B2C Commerce | Data Management Guide

📖 Import & Export Overview