Question below:

Question 7 1 point possible (graded) The graph below depicts the relationship between levels of education and level of GDP. We see that as the level of education rises, so does the level of GDP. Why can we NOT necessarily conclude, despite this obviously positive correlation, that education boosts growth? (Check all that apply) log output per worker relative to the US l l l l I l 0 2 4 6 8 10 years of schooling a) Growth might drive education, rather than education driving growth. b) There might be a different factor, such as strong institutions, driving both education and growth simultaneously. c) Correlation does not imply causation. d) Absolute levels of education might reflect other country characteristics that impact GDP