Final answer:
The characteristic suggesting the excerpt is from the Baroque Period is the use of polyphonic texture, which is a hallmark of Baroque music with multiple interwoven melodic lines. The correct answer is option 3.
Step-by-step explanation:
The characteristic of the excerpt "See, the Conqu'ring Hero Comes" from timing 0:07 to 0:35 that suggests it might be from the Baroque Period is its use of polyphonic texture. During the Baroque era, polyphony was a common technique, where multiple independent melodic lines, or voices, weave together to create a complex and richly detailed musical tapestry. This was in contrast to the monophonic texture of the earlier Medieval period and the homophonic texture commonly found in the later Classical period. The Baroque era's enjoyment of complexity and ornamentation in music is evident in the polyphonic passages where the interweaving of melodies provides a sense of drama and grandeur.