Final answer:
The interest Isabella's investment will pay is $100. Hence the correct answer is option A
Step-by-step explanation:
To find the interest Isabella's investment will pay, we can use the formula: Interest = Principal x Rate x Time. In this case, the principal is $2,000 and the rate is 5% (or 0.05 as a decimal) for one year. Plugging these values into the formula, we get: Interest = $2,000 x 0.05 x 1 = $100.
Therefore, the interest Isabella's investment will pay is $100.
Hence the correct answer is option A