Question

my grandmother is about 80 and she generally feels something like someone is Knocking at her room's door but in reality no one is knocked .and also see that someone was standing in front of her and eating something
but in reality there is nothing


which condition is this​

Answer 1

this is an illusion,also called sensation of fear

Answer 2

Answer:

The passage focuses on bringing out the surprise and excitement felt by the author when he notices a foot-print. The passage uses short simple sentence in order to convey this surprise and excitement of the author.