Which of the following are sources of variability? (Select multiple answers if you see fit.)

All of the carbon-carbon bonds in the benzene ring have triple bond characteristics.

If each furnace requires a hose that costs $20 and 2,000 furnaces are produced for the month, the total cost for hoses is:

Fixed manufacturing overhead production-volume variance

The following structure represents a carboxylic acid compound. 

Which of the following is the positive resolution of the psychological conflict of generativity vs. stagnation?

Which of Erikson’s stages has the virtue: will? (Written by Jereni F. in Corinth Spring 2019)

Joey was injured in a mining accident and suffered severe brain damage. In time, his brain healed, and he was back to working in the mines. The only change was in his personality. From being a highly aggressive and temperamental individual, he became mild-mannered and calm, almost to the extent of being placid. In this scenario, the region of the cerebral cortex that was most likely damaged in the accident was the _____ lobe.

Variable manufacturing overhead efficiency variance

Which one of Erikson’s developmental stages has the virtue of purpose? (Written by Cade online)