Can someone me out with this multiple choice question? (biology)

One group of reptiles, characterized by the fossil ark metal x

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.