阅读理解。阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。
Hispanic Heritage Month(拉丁文化月)is the period when people recognize the contributions of Hispanic Americans to the United States and celebrate Hispanic culture. Hispanic Heritage Week was approved by President Lyndon Johnson in 1968 and was expanded by President Ronald Reagan in 1988 to cover a 30-day period starting on September 15 and ending on October 15. The law came into force on August 17, 1988.
