You have the following formula given in the exercise:
![P\mleft(t\mright)=1500\mleft(1+r\mright)^t](https://img.qammunity.org/2023/formulas/mathematics/college/imbk5tiwwt7p0vyjxriegke69wg0c8gsoe.png)
Where "r" is the annual growth rate (expressed as a decimal) and "t" is the time in years.
Based on the information given in the exercise, you know that the annual growth rate is 6%.
![r=(6)/(100)=0.06](https://img.qammunity.org/2023/formulas/mathematics/college/ft5mxd4d49eg557pkaozzcue382f21ngip.png)
Notice that 6% can be expressed as a decimal number by dividing it by 100.
Since the information provided is from 1900 to 1950, you can identify that:
![t=50](https://img.qammunity.org/2023/formulas/mathematics/college/z17nwh351e86oi5fwu6mgwneuqnhx9q2rv.png)
Now you can substitute values into the formula and evaluate:
![P(50)=1500(1+0.06)^(50)\approx27,631](https://img.qammunity.org/2023/formulas/mathematics/college/na57fok8m4vu0hd6sbnhbudgt8h1kvjs3w.png)
Therefore, the answer is: Option a.