According to the meaning of the question, this question emphasizes the importance of collective interests, rather than their mutual influence, so a is excluded. Option B is wrong, the two are not parallel, and the collective interest is higher than the individual interest, so it is excluded. Option c is correct, but it doesn't fit the question. This issue emphasizes the importance of collective interests, rather than respecting and protecting the legitimate interests of individuals, so it is excluded. Option d is correct. The famous saying in this question is to emphasize the importance of collectivism and adhere to collectivism, so I was selected.