How can we make consumption more positive?

Answer light in color; silica-rich;

The correct answer is:   [b]:   "has no atmosphere" .

The circumcenter is  equidistant  from each vertex of the triangle. the circumcenter is at the  intersection  of the  perpendicular bisectors  of the triangle's sides. the circumcenter of a right triangle falls on the side opposite the right  angle. the incenter  of a triangle is always inside it.