Final answer:
Rodney should use the shortcut combination CTRL X to cut the first stanza of his poem and CTRL V to paste it after the third stanza.
Step-by-step explanation:
The shortcut combinations that Rodney should use to remove/cut the first stanza of his I AM poem and place it after the third stanza are CTRL X (to cut) and CTRL V (to paste).
Learn more about Shortcut combinations for cutting and pasting