Which sentence uses turn up to mean arrive, often unexpectedly?
Please turn up the radio before the song ends.
Ella turned up the collar of her coat.
The gardener turned up the soil near the fence.
Omar's cousin turned up at the door without calling.✓الإجابة الصحيحة
الشرح
The cousin arrives without warning at the door, so turn up carries the required arrival meaning. Increasing the radio's volume is another sense of the same words, but it does not describe a person's arrival.