Answer: I’m saying that it’s B “The author uses reasoning and evidence to support the idea that online brain training is effective.”
Not sure if I’m right though
Explanation:
I say it’s B because cause and effect can’t be the text feature for one because it just doesn’t make sense to me. Problems and solutions could be an answer choice but i don’t know because there was really no problem formed in the text it just talked about how brain programs improves brain Heath and how you should invest to help your brain and it explained it’s reasoning and gave evidence . I say A isn’t correct because this passage isn’t really in sequence it’s just telling you about brain training and how you should invest in it . But again i don’t know if I’m right so go with your gut .