白勇语法第５章语法第３练习题，高手帮助

Prompted by new evidence that the health risk posed by radon gas is far more serious than was previously thought,property owners are being advised by authorities to test all dwellings below the third floor for radon gas to make repairs as needed.

a.原文

c.authorities are advising property owers to

答案选ｃ。我想如果这里要选ａ的话，题　目是否要变成Been prompted by new evidence.....

我又在想，advise有没有这种用法are being advised （by authorities） to

译成ＸＸ人被专家建议作某事。