I believe that the answer is b, I hope this helps
They were an advancement on writing and with with writing made making trades and agrements with diffrent areas easier
What structures are you talking about?
Answer: Option (C) is correct.
From the given options, the following projects the most serious ambiguity on the effectiveness of the proposed procedure, <em>"Distribution of fuel required for cooking at the schools turn up there only sporadically and in inadequate amount."
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Here, in the given case the process is efficient and effective because the children easily reach the schools and cooking accommodation are usually available on site. But if the substance required for cooking is available sporadically and in inadequate amount, then the effectiveness will be hindered.
