Someone who heads a farming company is best described as a/an

Which of the following best describes the term cleavage? a. cleavage describes the quality and amount of light reflected from a mineral surface. b. cleavage is the characteristic growth pattern or shape of a mineral. c. cleavage is the splitting of minerals along natural planes of weakness.d. cleavage is the colored mark that a mineral makes when scratched on a porcelain tile.e. cleavage describes a mineral's resistance to abrasion.