Answer:
A. Conglomerate
Explanation:
Conglomerate is a clastic sedimentary rock that is composed of a substantial fraction of rounded to subangular gravel-size clasts. A conglomerate typically contain a matrix of finer grained sediments, such as sand, silt, or clay, which fills the interstices between the clasts. Conglomerates are clastic sedimentary rock that contains mostly pebble-size rounded clasts. The spaces between the clasts are generally filled with smaller particles and/or chemical cement that then binds and formed the rock matrices together. Conglomerate, in petrology, lithified sedimentary rock consisting of rounded fragments greater than 2 millimetres (0.08 inch) in diameter.
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