Aco-worker has recently behaved in a restless and irritable manner and seems confused. a possible physical cause for such behavior is

The answer to this question is that the person is experiencing an excessive thyroid secretion. Excessive thyroid secretion is a condition also known as hyperthyroidism. Excessive thyroid secretion can cause rapid heartbeat, anxiety, weight loss, nervousness, and hand tremors. In order to overcome the excessive thyroid secretion a treatment is needed by taking anti-thyroid medications. 

it would be d). more resources must be obtained to attain that combination of goods and services

answer; cultural trait;