Coarse grained igneous rocks tend to be ________ because _________________________. Question 22 options: extrusive; the slower cooling of lava allows more time for crystals to form intrusive; slower cooling of magma allows more time for crystals to form intrusive; the faster cooling of magma allows more time for crystals to form either intrusive or extrusive; the slower cooling of magma and lava allows more time for crystals to form extrusive; the faster cooling of lava allows more time for crystals to form