Translation:What is she holding on to?
Why is "What is she holding?" unacceptable?
While DRŽET means TO HOLD, the reflexive DRŽET SE means TO HOLD ON TO. You can see some other definitions at the links below. ČEHO is the genitive form of CO.
That is "Co drží?".
"What are they holding on to"
Thanks! Added now!
The hints suggest "What is holding on" is a valid answer.