ln 2 + ln 8 - ln 4

Use the logarithm rules ln a + ln b = ln(ab) and ln a − ln b = ln(a/b). Thus ln 2 + ln 8 − ln 4 = ln(2 × 8 ÷ 4) = ln 4, so the correct choice is ln 4.

AI-written and checked against the verified answer.