Gross motor skills involve large muscles in the arms legs and torso. The general guidelines for gross motor development for children 4 years of age include running, jumping and climbing well and control their direction. They can hop on one foot and they start to skip at this age. At this stage, they are also able to ride a tricycle and reliably catch a ball.
The answer is B. because Richter's scale is <span>a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations. </span>
