The phrase "acknowledge the challenge of" is correct and usable in written English.
It is most commonly used to express that someone accepts or is aware of a difficult task or issue that they must face. For example: "The professor acknowledged the challenge of teaching such a large class size."
Researchers themselves acknowledge the challenge of being simultaneously scientist and parent.
Supporters acknowledge the challenge of avoiding pitfalls that have tripped up similar efforts elsewhere.
We note that cost should not be the only design criteria and acknowledge the challenge of handling trash in pit latrines.
"The Raiders acknowledge the challenge of Barret coming back into the locker room, but they continue to welcome him back," Pittman said.
Yet, as intelligence officials acknowledge, the challenge of discovering and halting the Islamic State's illegal streams of cash is getting progressively harder as the group's territorial holdings shrink.
While U.S. military officials say they take precautions to prevent civilian casualties, they acknowledge the challenge of avoiding unintended deaths in large-scale operations conducted in densely populated urban areas.
And "The Boys Are Back," which seems at times to want to acknowledge the challenges of raising children, shrinks away from anything too wrenching or difficult.
We acknowledge the challenges of coordination and adequate resources in health crises such as the current Ebola outbreak in Congo, but our findings suggest that improving the health of local populations requires knowledge about how African players affect outcomes.
While we acknowledge the challenges of appointing cattle herders in rural areas, we have shown that low-value domestic breeds are more vulnerable to predation than the high-value imported ones, simply because the latter are tended better.
4. Acknowledge the challenges of going offline.
