Final answer:
The 4th decimal place of Pi is 5. Pi to seven decimal places is 3.1415926, where the fourth decimal is 5 (Option B).
Step-by-step explanation:
The digit found at the 4th decimal place of Pi (π) is 5. The value of Pi to seven decimal places is 3.1415926. To find the 4th decimal place, we look after the decimal point and count four places to the right, which gives us the sequence 1 (1st place), 4 (2nd place), 1 (3rd place), and 5 (4th place).
In practice, we often round numbers like Pi to a certain number of decimal places for convenience and because a high precision is rarely needed for practical problems. For example, for many geometrical calculations, using 3.14 or 3.1416 is sufficiently accurate. Remember, unless you are dealing with highly technical scientific work, knowing Pi to two or four decimal places is often enough. Therefore, the answer is B) 5.