Birthday is the subject of the sentence. This is because t<span>he subject of a sentence is the person, place, thing, or idea that is doing or being something.</span>
The purpose is to inform.
It is not even clear what the author would be selling. Also, they're not trying to entertain or persuade; there is no indication of this; so the best answer is "to inform".
<span>The second conflict is man versus nature. Both men were in a dark forest in the freezing cold. Each spent the evening patrolling the tiny strip of land, hoping to catch the other and accuse him of 'trespassing'. The cold weather, the dark, the storm and the enormous tree reflect nature’s might against the two enemies. The resolution to this came, in the form of hungry wolves that are drawn to the smell of blood. The wolves represent nature’s final blow against the men and the men’s deaths will represent a clear and decisive victory- It's a really interesting story, maybe you should read it ;) </span>
D. There was a sharp softness...
an oxymoron is a figure of speech in which opposite terms appear
