Which statement describes the cause-and-effect relationship between the development of the balance and writing? a. the invention of writing led to more complex architecture. better architecture contributed to the invention of the balance. b. the invention of the balance made trade easier. increased trade contributed to the development of more complex writing systems. c. the invention of writing led to urbanization. urbanization contributed to the invention of the balance. d. the invention of the balance increased agricultural production. increased agricultural production contributed to the development of more complex writing systems.

Option B. The invention of the balance made trade easier. Increased trade contributed to the development of more complex writing systems.

Explanation:

Taking into account a cause-effect relationship that describes the development of both balance and writing is needed, one can immediately discern that both options B and D include the development of writing systems as effects for the causes provided.

However, option B makes a more appropiate presentation for the relationship, given the variation at the beginning of the second sentence compared to the first one, whereas option D uses "Increased agricultural production" for both ending the first sentence and starting the second one.

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