NFT Development Certification Exam

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A developer is migrating a project from ERC-721 to ERC-1155 to save on transaction costs. What is the primary architectural change they will leverage in the ERC-1155 standard to achieve this?

Deploying a separate smart contract for each token type. Utilizing the `safeBatchTransferFrom` function to transfer multiple token types in a single transaction. Implementing a more complex metadata JSON structure. Removing the approval mechanism to reduce function calls.

Correct Answer:

Utilizing the `safeBatchTransferFrom` function to transfer multiple token types in a single transaction.

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