Which of the following is an example of an author making an explicit statement of purpose for writing? a. “investments in renewable energy will create jobs, wean us from our dependence on oil, and make important steps toward saving our planet.” b. “i will show you that wind and solar power investments are succeeding both as profitable ventures and, more importantly, as sources of power for cities.” c. “using the power of natural forces, such as the sun and the wind, will give us an opportunity to create clean energy for the future.” d. “therefore, i hope you will use what you learned to take this to the next step by investing your dollars, your time, and most of all, your will power in the energy of the future.”