The correct answer is A. meticulous.
Meticulous means very careful and precise. It is the opposite of careless. Someone who is meticulous in keeping accounts will take great care to record all of their income and expenses accurately. They will also be careful to keep their records organized and up-to-date.
B. irregular means not following a regular pattern. This does not make sense in the context of the question, as someone who is meticulous in keeping accounts would be expected to follow a regular pattern of recording
their income and expenses.C. careless means not taking enough care. This does not make sense in the context of the question, as someone who is meticulous in keeping accounts would be expected to take great care to record their income and expenses accurately.
D. irresponsible means not taking responsibility for one’s actions. This does not make sense in the context of the question, as someone who is meticulous in keeping accounts would be expected to take responsibility for their financial records.