Gneiss is a metamorphic rock formed from? by Sunday | Jul 4 | Agricultural Science WAEC | 0 comments A. sandstone B. slate C. shale D. clay E. granite Correct Answer: Option E – granite Users Also Read These:Marble, slate and gneiss are?Marble is a metamorphic rock formed from?Which of the following is not a metamorphic rock?Shale is a fire-textured sedimentary rock formed…An example of mechanically formed sedimentary rock is?