The answers are the letters A, B, C. Postings to the accounts payable ledger from the purchases journal should be made either daily, weekly or monthly. The postings can be done in two ways which is the journal entries can be posted at the time of the transaction was journalized or it may be posted as the journal page is filled out using manual accounting system as a matter of own taste.
It was the main exhibit of the Paris Exposition 1889
It would be the self-determination theory. He's intrinsic motivation of becoming a lawyer, or as the theory says, the happiness of taking up law is lost. And the mentions of the extrinsic motivation here may mean, the only motivation Ken have for law may be just to earn money, to just finish school or just for the sake of his parents.