Which of the following is a correct comparison of the hawaiian islands and the mississippi delta?

the hawaiian islands were formed by constructive forces, but the mississippi delta was not.
the mississippi delta was formed by constructive forces, but the hawaiian islands were not.
both the hawaiian islands and the mississippi delta were formed from constructive forces.
neither the hawaiian islands not the mississippi delta were formed from constructive forces.

Both the Hawaiian Islands and the Mississippi Delta were formed from constructive forces.

Explanation:

Hawaiian Islands were formed from volcanism. Volcanism is a constructive process. Every year, huge volumes of magma is emplaced in the Hawaiian region. Hawaii keeps growing due to the volcanic forces at work.

A Delta is a depositional phase where sediments enters the ocean. Most rivers and streams have their final depositional basin in the ocean. As they approach the ocean, their velocity decreases substantially and deposition occurs. At a delta we see rivers dividing into distributaries and laying down sediments. A Delta is formed from a deposition of which is a constructive force.

b.) plain  

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