Final answer:
The greatest effect size would be option a) f=90.7 p=0.863. The effect size is determined by the f value in the ANOVA output.
Step-by-step explanation:
The greatest effect size would be option a) f=90.7 p=0.863. The effect size is determined by the f value in the ANOVA output. A higher f value indicates a larger effect size. In this case, option a has the highest f value of 90.7, which represents the greatest effect size.