Answer:
the answer is in a hotel i think
The answer is B it allowed farms to be able to purchase more land, therefor increasing crop output.
The first humans adapted and modified their environment, by manipulating soils and rich silt form the irrigation of the river valley. This allowed for greater use of agriculture which helped the population sizes increase and eventually evolved into a surplus. The humans began to domesticate animals and use them for work. All these adaptation and modifications let civilization eventually grow to the society it is today.
You cant really find out because you dont know what the winners score is. Maybe just come up to your teacher and say that you didnt under stand
