How was the lower town different from the Citadel in the towns of the Indus valley civilization

The citadel was built on a raised plateform while the lower town was located on the lower part of the town. The lower town was larger than the citade. While public buildings like the Great Bath was built in the citadel, the lower town ususally had only residential buildings.

question:  

the chart compares religious beliefs to us political party support.

religious beliefs and party support, 2012

this chart demonstrates that

a) more highly religious people supported the republican candidate, while more nonreligious people supported the democratic candidate.

b) more highly religious people supported the democratic candidate, while more nonreligious people supported the republican candidate.

c) more moderately religious people supported the republican candidate, while more nonreligious people supported the democratic candidate.

d) more moderately religious people supported the democratic candidate, while more nonreligious people supported the republican candidate.

answer: a.