Final answer:
The correct option is B. 0.1 × 0.1 = 0.01 for the given multiplication.
Step-by-step explanation:
The correct option is B. 0.1 × 0.1 = 0.01.
To multiply decimals, we multiply the numbers as if they were whole numbers, disregarding the decimal point. Then, we count the total number of decimal places in the original numbers and place the decimal point in the product accordingly.
In this case, we have one decimal place in each number. So, when we multiply 0.1 by 0.1, we get 0.01, which has two decimal places. Therefore, option B is correct.
Learn more about Multiplying decimals