Xenoliths are associated most closely with which magnetic process and igneous rock body?
a. columnar jointing; lava flow
b. intrusion; granitic batholith
c. vesiculation; pumice lump
d. magmatic differentiation; gabbro sill

b. Intrusion; Granitic Batholith

Explanation:

Xenoliths are a rocky fragment that becomes developed in large bodies of the rocks and thus as a result of the solidification process, they are described as the inclusions of the igneous rocks when the release of the magma and they thus occur along with the magma chambers. As they are non-uniform and they are also found on the meteoroids and contain two types of gabbro that are formed by different pressure and temperatures. They provide information about the upper mantle.

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