Final answer:
To round the number 235,368,998 to the nearest 100,000, the correct answer is (d) 235,400,000.
Step-by-step explanation:
To round the number 235,368,998 to the nearest 100,000, we need to look at the digit in the hundred thousands place, which is 5. Since 5 is greater than 4, we round up the digit in the hundred thousands place and drop the digits to the right. The rounded number to the nearest 100,000 is 235,400,000. Therefore, the correct answer is (d) 235,400,000.