disaster response is becoming ①increasingly complex with each new event. whereas dozens of agencies ②were used to converge upon the scene of an earthquake or flood, there are now hundreds, and occasionally thousands. in response to the december 2004 tsunami events, for example, over 200 organizations addressed the single issue of water quality, while thousands more provided food aid, shelter, medical assistance, and many other victim and rehabilitation needs. studies have found that ③despite coordination attempts these responding agencies still tend to work independentlyand in an uncoordinated manner, ④resulting in unnecessary delays and inefficiencies in the distribution and provision of relief. lags, gaps, and inaccuracies persist in the vital information ⑤upon which coordination depends. even when the nonorganizations and local community organizations involved in response would like to work together, they are often left out of the coordination planning processes before and during disaster response.

이 글 요약문을 쓰고자 할때
when the big disaster occurs, there is lack of [coordinated/coordination/coordinating] effort in response to it efficiently.
셋중 문법적으로 뭐가 가능 한가요?
본문에 coordination attempts 가 있으니 coordination effort 라고 해도 무방하지 않나요?