You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.

Knot and knight both have silent K's making them hard to spell without context. The _ is a longer word so it is harder.
knight

Jenna kept a list of her accomplishments and tried to grow her contact list in her career, but she found the _ to be more helpful concretely.
list

To prepare for the event required no skill but plenty of endurance, as the _ was essential for the marathon.

endurance