Answer:
Making that noise is the gerund phrase.
Explanation:
A gerund is word that is in the verb form but ending with an -ing that makes it function as a noun. A gerund phrase is formed when the gerund pars alongside a modifier or an object or sometimes even both.
In the given sentence, the gerund phrase will be
"making a noise",
where "making" is the gerund and "a noise' is the modifier. The gerund phrase in the sentence is used as a noun.
