A terrane created by an oceanic volcanic arc accreted to a continental margin would be composed . a. Of folded, quartz sandstone and shallow water, marine limestone
b. Exclusively of granite plutons and rhyolite tuffs (hard volcanic rock composed of compacted volcanic ash)
c. Mainly of oceanic arc lava flows and coral limestone
d. Mainly of organic-rich, black shales and beach-type sandstones

it is most likely c or d

Explanation: A terrain of an oceanic volcanic arc is when a oceanic crust is being subducted under a continential crust a volcanic arc is an active land mass. the more active the plates are from grinding and subducting the bigger the arc will be the ark can also make small islands their are 3 known types of arcs.

A. Plant roots.

Weathering may occur through the actions of water, air, plants, animals and various chemicals. Mechanical weathering is the breaking down of rocks into smaller pieces without changing the composition of the minerals in the rock.