Evaluate the following expression. you should do this problem without a calculator. e^in 6 a.3 b.1 c.0 d.6

ln is called the natural log, or log to the base e. ln can also be written as 

So, we can write the given expression as


The property of logs is:


This mean if the number a is raised to log whose base is the same as the number a itself, then the answer will be equal to the argument of the log which is x.

In the given case, the number e and the base of log are the same. So the answer of the expression will be the argument of log which is 6.

so, we can write 

Thus, the correct answer is option D