For the following graphs of 2 x 2 ANOVAs, decide whether or not there appears to be

Question:

For the following graphs of 2 x 2 ANOVAs, decide whether or not there appears to be (a) a main effect for IV1 (graphed as dots along the horizontal X-axis), (b) a main effect for IV2 (graphed as two separate lines), and/or (c) an interaction effect. Explain your answers.