Choose one sentence that has the same meaning as the root one

Choose one sentence that has the same meaning asthe root one
1. We must take steps to preserve natural resources; otherwise the planet will be in danger.
A. Unless we take steps to preserve natural resources, the planets will be in danger.
B. If we take steps to preserve natural resources, the planets will be in danger.
C. Unless we take steps to preserve natural resources, the planets will not be in danger.
D. If we take steps to preserve natural resources, the planets would be in danger.
2. The police shouldn't allow people to park there
A. People shouldn't be allowed to park there by the police
B. People to park there shouldn't are allowed by the police
C. People shouldn't have allowed to park there by the police
D. People to park there shouldn't have been allowed by the police
3. People think that he was born in a rich family.
A. That is thought he was born in a rich family.