According to this passage, primitive religion was the precursor to A. tribal belief systems.
B. superstition.
C. practical science.
D. respect for elders.
E. a rapid increase in population.

Select the abbreviation that tells how the italicized noun clause is used. s-subject, do-direct object, pn-predicate noun, op-object of preposition the first thing to consider was how to find a paying job. s op pn do