I'm pretty sure, that this is a correct answer: When a formula contains the address of a cell, it is called a <span>A. cell reference. </span>
Answer:
The correct answer to the following question will be A. Unique and C. External ID.
Explanation:
Unique ID: For any specific field, if the same value is being used in a multiple type of record, the Unique field setting prevents us from this and also helps to create external IDs.
External ID: The field that contains some unique records from system outside of the Salesforce.
Hence, these two ID will be the most useful field which will be used to data loads.
I don't understand, you didn't give us any following questions.
Answer:
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