Ridge push is a process in which the unlifted ridge is thought to push the oceanic plate towards the subduction zone. Slab pull is a process where by the weight of a subducting plate help to pull the trailing lithosphere into subduction zone. Ridge lush is cause by the potential energy gradient from the high topography. Slab pull is caused by negative buoyancy of the subducting plate.
I realize that quite some time has passed since you asked this question but I do have the answers for other people with the same question.
So, the correct answer is
Wake Island,
Marshall Islands,
Palau,
Northern Mariana Islands,
& Guam
Dalit means "oppressed" (option b).
the origin of the word is in Marathi, and it's what they call themselves. By others they are called "untouchables"/
