The phrase "a massive task that" is correct and usable in written English.
It can be used when describing a significant or challenging assignment or responsibility that is being referred to in a sentence.
Example: "Completing the project on time is a massive task that requires careful planning and coordination among team members."
Alternatives: "a huge undertaking that" or "a significant challenge that".
Thinking in more practical terms, with sample sizes in the hundreds of thousands or millions, getting expressed informed consent from each subject becomes a massive task that would swamp the resources of even the most robust research budget.
With the bulk of states, and the US population, coming under the federally-run exchanges, the onus is now on Washington to set up its scheme by October 2013 for the start of individual enrolments, with coverage through the exchanges starting in January 2014 – a massive task that could determine the ultimate success or failure of Obamacare.
This second time, it seemed such a massive task that I put it off for years.
And just absorbing that amount of language - learning to speak it in a way that sounds second nature when you actually perform it, so it sounds as if you, not Shakespeare, are thinking up these images - that is a massive task.
That is a massive task at a time when western and particularly US policy is weighed down by introspection, a sense of decline, bemusement at a region few even claim any longer to understand and gridlocked electoral politics.
But that's a massive task to police Facebook's 2.27 billion monthly active users.
We knew that we had a massive task ahead of us.
The review of SBC's finances was such a massive task, Lynch and other PUC officials said, that it had been split between two administrative law judges.
But despite the victory, Mackail-Smith told BBC Scotland that Scotland still have a massive task ahead of them.
A regular pol would say something like: "Well, Brian, we all know that staging an Olympics is a massive task.
"We gave ourselves a massive task, but I'm proud of the way the boys took on that task".
