Answer:
A.) The writer thinks moving water to the Central Valley is a good investment.
Explanation:
The paragraph gives an overview of the returns made from the city of California's agricultural activity which is was fueled by the channelization of water from the Northern mountains to the agricultural lands of the city located in the Central Valley. From the excerpt, it could be seen that getting water to the Central Valley may be expensive and tedious as it requires a 400 mile canal design. However, channeled must have been used frequently r irrigation purposes which in the end yielded very profitable return and even surpassed the revenue made from what was seen as the main revenue source of the city.