In the sentence: I think I just got... an idea!
the ellipsis is most likely used to show:
Select one:
1)an omission in a quotation.
2)a dialogue that ends with silence.
3)a pause in speech,
4)an unfinished thought.

this map shows the geographic distribution of different tidal cycles along some earth's coastlines. areas experiencing tides are marked in yellow and experience one low tide and one high tide each day.

you did not give us a excerpt to read or any statements to choose from so we can not know the right answer be more detailed when asking your question

how to separate a subordinate clause from the main clause