1 , 3 and 4 hope this helps
The answer to your question is b
<span>"It took them a minute to grasp what he was saying, even who he was. " This line gives us a hint that they probably had forgotten about Ravi because they tried so hard to remember who he was.And indeed, the next sentence which says "They had quite forgotten him." confirms that they definitely had completely forgotten about him.
The sentence at the end of the paragraph - "</span><span>Having disappeared from the scene, he had disappeared from their minds." gives us an idea that Ravi was completely wiped out from the children's minds, which is a saddening truth. </span>
it depends it could be emotion and stuff
