Final answer:
The number 876 in expanded form is written as 800 + 70 + 6, reflecting the value of each digit according to its place in the number.
Step-by-step explanation:
The task is to write the given number 876 in expanded form. The correct expanded form of the number is 800 + 70 + 6. This is because the digit 8 is in the hundreds place, so it represents 800 (8 hundreds), the digit 7 is in the tens place, representing 70 (7 tens), and the digit 6 is in the ones place, thus representing 6 (6 ones).