The correct answer is: A. Combine explanatory text and data analysis code in a single document.
Literate statistical programming is a style of programming that combines explanatory text and data analysis code in a single document. This allows the reader to understand the purpose of the code and how it was used to generate the results. It also makes it easier to reproduce the results if necessary.
Option B is incorrect because it is not a goal of literate statistical programming. Literate statistical programming does not require that data analysis documents be exported in any particular format.
Option C is incorrect because it is not a goal of literate statistical programming. Literate statistical programming does not require that data analysis summaries be written in any particular language.
Option D is incorrect because it is not a goal of literate statistical programming. Literate statistical programming does not require that any of the mentioned things be done.