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Language professionals, community leaders, and individual members of Native communities continue to raise awareness of the rapid decline of indigenous languages among their peoples, policymakers, and the general public. . . . Individuals and language communities have run programs to revitalize their heritage languages in private homes, communities, and schools since the 1970s. As there are diverse communities, there are diverse language programs. Some "revive" languages not spoken for decades, based on documented materials; some rely on one-on-one language transmission, especially when the remaining speakers are elderly; some reintroduce the language to schoolchildren and to their parents; some are heritage language medium programs; and many teach the language as an academic subject. Programs target learners of all ages. . . .

What does the information in the table suggest about the language preservation programs discussed in paragraph 7?

A. Older people are most interested in enrolling in and learning from the programs.

B. There are fewer native language programs now than there were forty years ago.

C. The programs are more effective when targeted at children rather than at adults.

D. The programs have not been entirely successful at preserving native languages.