Answer:
Scheduled too hectically
Step-by-step explanation:
A participial phrase consists of a participle plus modifier(s), object(s), and/or complement(s).
A participle is a verbal ending in -ing (present) or -ed, -en, -d, -t, -n, or -ne (past) that functions as an adjective, modifying a noun or pronoun.
A good hint to find out which of the phrases is a participle phrase is that participle phrase will always begin with a present or past participle. In this case, the participle is in the word "Scheduled" so the participle phrase is "Scheduled too hectically"