A is the only answer that would actually make sense logically. Because an illusion isn't actually real, but it always represents something one way or another.<span />
Allusion is a reference to another piece of literature or published work. In literature there are many references to biblical stories or characters, since it is a widely read text. Other common allusions are references to famous couples like Bonnie and Clyde or Romeo and Juliet. In order for a reader to understand the allusion, he must understand what the allusion represents.
"Some stores have closed because of the snow." This action is happening in the past, so either "have" or "has" will be used. It is "have" in this case because "stores" is plural.
<span>He fell down because he is clumsy (internal attribution). I fell down because the furniture was haphazardly arranged (external attribution).</span>
