00A .. People's arbitrary imagination of the actual development in the future.
00B .. People's yearning and pursuit for the future is formed in practice and has the possibility of realization.
00C .. People's fundamental views and attitudes towards the purpose and meaning of life formed in practice.
00D .. The attitude that people firmly believe in a certain concept or thing and put it into practice on the basis of certain understanding.
00 answer: b
00 analysis: ideal concept
Ideal is people's yearning and pursuit for the future, which is formed in practice and has the possibility of realization. It is also a concentrated expression of people's world outlook, outlook on life and values in the goal of struggle.