Answer:2, 4, 5

1 is incorrect because this is not described as a health problem. 3 is incorrect because noise may interfere with spoken communication, not with speech as such. 2 is correct because the speaker says: Traffic noise is one of the health hazards, as it can lead to other problems, like noise-induced hearing impairment. 4 is correct because the speaker says:... while this doesn't drive you mad in the medical sense, it is intensely annoying and can lead to mental health problems. 5 is correct because