HELP ME OUT PLS In which positions would a first quarter mooni and last quarter moon appear to an observer on Earth?

A) First quarters position 1

Last quarters position 5

C) First quarters position 2

Last quarter position 6

B) First quarter position 3

Last quarter position 7

D) First quarters position 4

Last quarters position 8

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?