Tory conducts an experiment to see which of his classmates can run at the greatest speed. He records his data in the table
below.
Classmates' Speeds During Different Activities
Time (Seconds)
26.0
Classmate
Barney
Dora
Penny
Meg
Activity
ran across a baseball field
ran one lap on a track
ran across a basketball court
ran up a hill
85.5
12.3
8.8
How could Tory improve his experiment?
A. He could have them all ride their bikes across the baseball field.
B. He could time them each jogging at a slow pace.
C. He could have them all run under the same conditions.

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?