Explanation:

For a newly added product to appear on the storefront in Salesforce B2C Commerce (SFCC), the system relies heavily on the search index and product visibility settings.

📌 The two key requirements are:
1. The product must be set to "Online" and "Searchable"
✅ Online: Allows the product to appear on the storefront at all.
✅ Searchable: Allows the product to be indexed and included in search and category listings.

These options are found in Business Manager under:
Merchant Tools → Products and Catalogs → Products → Product Details

2. The search index must be built
SFCC storefront pages (like category grids, search results) are powered by the search index, not real-time database queries.
If the product is added but the index hasn't been rebuilt, the storefront won't display the new product.

Rebuild the index in:
Merchant Tools → Search → Search Indexes

❌ Why the other options are incorrect:

B. "The product has a master product AND the search index is built" ❌
This only applies to variation products.
Not all products need a master; many are standalone products.
Having a master product doesn't guarantee visibility.

C. "The product has a price AND the product is online and searchable" ❌
Having a price is important for the buying flow, but not strictly required for visibility.
Some sites allow products without prices (e.g., “Call for price”).
Missing index build would still prevent the product from showing.