The phrase "a challenging process and" is correct and usable in written English.
It can be used when describing a task or situation that requires significant effort or skill, often as part of a larger sentence.
Example: "Learning a new language can be a challenging process and requires dedication and practice."
Alternatives: "a difficult undertaking and" or "a demanding task and".
It's a recognition that this is a challenging process, and that ordinary individuals sometimes need the support of a collective if they're to achieve a noble aim.
'Well, it was a challenging process, and I learnt a hell of a lot, but most of the stuff that I felt was most interesting about my performance didn't make it onto the screen.
Modifying the aircraft so that it could fly safely when the door for the telescope was open was a challenging process, and test flights did not begin until 2007.
Career change is always a challenging process and it is even more so in times of economic uncertainties like these.
The experimental characterization of graphene/polymer nanocomposites is a challenging process, and hence, computational approaches for predicting the behavior of such materials have also extensively been employed.
It is also important that when analysing visual data, the researcher accounts that it is a challenging process and a "subjective and iterative endeavour" (White 2011, p.194).
Teaching novice programmers the skills associated with software development is a challenging process (Kim and Lerch 1997).
Psychological problems and discrimination within the local community make reintegration to normal life a challenging process for exploited and abused children.
The development of state-of-the-art wireless communication transceivers in semiconductor technology is a challenging process due to complexity and stringent requirements of modern communication standards such as IEEE 802.11n.
It's a challenging process that most producers and DJs shirk, but she's turned it into a defining trait.
As the papers illustrate, this can be a challenging process in the complex and contested arena of SRHR.
