"prominent tasks" is a correct and usable phrase in written English.
You could use it to refer to tasks that are important or difficult, or to tasks that are particularly noticeable or noteworthy. For example, "The leaders of the team were responsible for some prominent tasks in the development of the project."
"A daily average of 1,000 illegal border crossers are arriving in Hungary, so illegal immigration has become a severe problem and its control a prominent task," a joint statement from the interior and defence ministries said.
Retinal blood vessel segmentation is a prominent task for the diagnosis of various retinal pathology such as hypertension, diabetes, glaucoma, etc.
Confidence is the first and most prominent task to solve the circuit problems.
The Simon task is one of the most prominent interference tasks and has been extensively studied in experimental psychology and cognitive neuroscience.
Reminiscence effects are most prominent in tasks demanding continuous attention and response.
We speculate that the neurodevelopmental vulnerabilities of children who undergo cardiac surgery in infancy are most prominent on tasks that call upon so-called 'executive functions'.
Moreover, another study found that neurocognitive effects of MPH were more prominent on tasks without an executive function component than with an executive function component [ 8].
Together with the observation that there were no striatal or prefrontal novelty effects in the placebo group, this suggests that the functional effects of galantamine and levodopa, as administered in our paradigm, are most prominent in task-relevant mesolimbic structures (i.e., SN/VTA and MTL) and not more global effects in brain regions known to be innervated by dopamine and acetylcholine.
