He could never remember the last line of the what he was set to perform?\nOptions:\n- transportation system\n- stanza\n- park\n- add information on spreadsheet\n- electromagnetic spectrum
Step-by-step reasoning:
stanza
Stanza is a verse or a group of lines forming the basic recurring metrical unit in a poem.

He could never remember the last line of the stanza he was set to perform.

.

Therefore, the answer is stanza