Reliable tests are always valid. Please select the best answer from the choices provided -
OT
OF

No bc a lot of things r still theories n unproven

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.

If its history of, then b) because a) implies only present day (now)