Final answer:
When uncertain of spellings and unable to confirm, blanks should be used in the spelling list for a transcriptionist to maintain document integrity.
Step-by-step explanation:
If unable to confirm exact spellings with the participants or internet, the correct action to take is to put blanks in the spelling list provided to the transcriptionist. This practice ensures that the transcriptionist is aware that the spelling is unconfirmed and not erroneously transcribed. Following this protocol helps to maintain the integrity of the document and allows for the possibility to fill in the correct spellings at a later time once the correct information is available.