Final answer:
The author's purpose in providing information about the commercial pecan orchards in Mississippi is to highlight the high yield of pecans in 2009.
Step-by-step explanation:
The author's purpose in providing information about the commercial pecan orchards in Mississippi is Option 1: To highlight the high yield of pecans in 2009. The article discusses a detailed cost-benefit analysis of various agricultural products, including pecans. By providing information about the commercial pecan orchards in Mississippi, the author aims to emphasize the success and productivity of pecan production in that particular year.