The answer would be between b and d but i would go with d
I wouldn’t genetically engineer my child as this has a lot of ethical concerns as certain people believe that we are created in the image of God so altering that would be deemed as wrong and sinful. Also this may have later health concerns for the child which hasn’t yet been tested so can not be sure if having designer babies is safe or not.
I believe the main purpose of wildlife (movement) corridors is to connect two otherwise isolated populations. Wildlife corridors are links of wildlife habitat that joins tow or more larger areas of similar wildlife habitat. They are very critical for the maintenance of ecological processes such as allowing the movement of animals and the continuation of viable populations.