Asequence is a melodic pattern
a. repeated at different pitch levels.
b. containing two phrases of unequal lengths.
c. containing a series of notes that add up to a recognizable whole.
d. that always increases in pitch along a scale.

A. Repeated at different pitch levels.

Explanation: When songs are composed, there is a sequence that is repeated at least once throughout a song.

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i believe the answer is: a.  abstract forms were often used to represent human figures.

representing human figures in abstract forms is often used in the geometric period, not hellenistic  period.   during the hellenistic  period,   aesthetic value derived from creating arts which mimic the actual shape of a certain object or individuals.

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