The unalienable rights mentioned in the constitution and the declaration of independence are rights that

must be approved by the president

can be reviewed by the supreme court

must be granted by congress

cannot be surrendered

(B) cannot be surrendered  

Explanation:

Unalienable rights are rights that we are unable to surrender. As indicated by the idea of basic rights found in the Declaration of Independence, freedom is such a right. That implies that on the off chance that we marked an agreement to be a slave, we would not have a commitment to keep it; and regardless of the agreement, nobody would reserve a privilege to our services.

Having rights that are inalienable does not mean they can't be assaulted by our being arbitrarily killed, imprisoned, or otherwise oppressed. It implies that such demonstrations are not ethically advocated and that we have a ground for moral complaint.

food chain i would say only because there is competition on getting food and survival

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation: