You find a rock that contains large round pebbles that appear to have been glued together. what conclusions can you draw about this rock?

The correct answer is:

Sedimentary rocks are examples of rock that are created by the displacement and succeeding cementation of ore or organic scraps on the floor of oceans or another evidence of water at the Earth's surface.As it is in the form of round pebbles so it is conglomerate that is a coarse-grained clastic sedimentary rock that is comprised of a large fraction of forming to subangular gravel-size clasts, e.g., granules, pebbles.

answer; i believe the correct answer is (a) nigeria is the largest african crude (oil) supplier; /// so revenue from petroleum;

where are the statements without that i cant you