MOst cells in a typical brain are a) haploid b) diploid C) triploid D) a mixture of haploid and diploid D) the brain is not made of cells but rather is a nervous tissue

B) Diploid - Only Gametes are Haploid. Every other cells are somatic cells which are diploid. They contain 46 chromosomes rather than 23 that the haploid carry. Neurons and glial cells make up of the brain and that makes up the nervous tissue. Just remember Gametes (sex cells) are the only cells that are haploids.