Test analysis: According to the characteristics of this calligraphy described by the stem, "Regular script and cursive script have the advantages of neatness, clarity and liveliness", so we should refer to the running script between them and observe the options. A is a running script, so the answer is a.
Comments: This question is relatively simple, mainly to examine students' knowledge and understanding of China's calligraphy art, and to examine students' ability of recognition and reproduction.