Final answer:
Monique should choose the option of adding $1,500 at the end of the year to her salary, resulting in a higher final salary of $71,500.
Step-by-step explanation:
To determine which raise Monique should choose, we can compare the two options: adding $1,500 at the end of the year or adding 1.5% of her current salary. 
Option 1: Adding $1,500 at the end of the year to Monique's salary. 
Her current salary is $70,000. 
Therefore, her new salary would be $70,000 + $1,500 
= $71,500.
Option 2: Adding 1.5% of Monique's current salary. 
1.5% of $70,000 is calculated by multiplying $70,000 by 0.015, which equals $1,050. 
Her new salary would be $70,000 + $1,050 
= $71,050.
Comparing the two options, Monique should choose Option 1 where she adds $1,500 at the end of the year to her salary, resulting in a higher final salary of $71,500.