I didn't think (D) was correct because even though the twins inclination is to have similarities, they reject these inclinations to be unique between the two. So, I thought this answer choice doesn't weaken the argument that there is a natural inclination between twins. It just says that with conscious effort, twins can have differences.

I thought B weakens the argument because it casts doubt on the claim that the artist painted the battle scene because a figure in it resembled his self-portrait by stating that other people are also real people. Therefore, any of those real people could've painted that scene. I thought it was weakening the assumption that just because a figure in the painting resembles an artist, the artist probably inserted himself in the painting. What if another real person during that time painted that scene and inserted himself in it but just a renowned artist. Also, I interpreted "history" as in "Renaissance" history in our perspective.

I am down!

What is the difference between premise and support?#help