I don't think any answer would be correct, if you have an option "none of the above" then that would be the correct answer
Answer:to add a column to existing table.
to rename any existing column.
to change datatype of any column or to modify its size.
to drop a column from the table.
Explanation:
hope this help
A slide *transition* is the word you're looking for, well I mean, if you're using powerpoint it is.
