What is the product of 13 and 0.123?

To find the product of 13 and 0.123, you multiply these two numbers together:

13 × 0.123 = 1.599.

This calculation shows that the correct answer is indeed 1.599, which aligns with the first option provided.

The reason the other options are not correct lies in their mathematical calculations. For example, 0.99999 is not the result of multiplying 13 by 0.123, as that yields a value of approximately 1.599. Similarly, the products suggested by the values in the other options do not match what we would expect from that multiplication, making them incorrect.

In summary, 1.599 represents the accurate calculation of 13 multiplied by 0.123.