What stops Benvolio from approaching Romeo is that <em>he noticed that Romeo purposely hides from him when they meet walking.</em> <u>The correct answer is the last one.</u>
Explanation:
We can find the answer to this question in the excerpt from act I, scene I of Romeo and Juliet: "<em>So early walking did i see your son: towards him I made; but he was ware of me, 110 and stole into the covert of the wood: i, measuring his affections by my own, that most are busied when they’re most alone, pursu’d my humour not pursuing his, and gladly shunn’d who gladly fled from me.</em>" Specially in the line that says "<em>did i see your son: towards him I made; but he was ware of me, 110 and stole into the covert of the wood</em>", by reading this, it is very clear that Benvolio want to approach Romeo, but he sees how Romeo hides from him when he sees Benvolio and he regrets to do it.