The correct answer is C. 3 to 8.
Dielectric constant is a measure of how much a material can be polarized by an electric field. Mica is a mineral that is composed of sheets of silicate tetrahedra. These sheets are held together by weak van der Waals forces, which means that they can easily be polarized by an electric field. This makes mica a good dielectric material.
The dielectric constant of mica is typically in the range of 3 to 8. This means that mica can be polarized by an electric field to a much greater extent than air, which has a dielectric constant of 1. This makes mica a good material for use in capacitors, which store energy by polarizing a dielectric material.
Option A is incorrect because the dielectric constant of mica is not typically as high as 200. Option B is incorrect because the dielectric constant of mica is not typically as low as 100. Option D is incorrect because the dielectric constant of mica is not typically in the range of 1 to 2.