Answer:
arduous tasks.
Explanation:
So, let us fill in the gap in the question above, so we will have;
"When a person today has a really hard job to do it’s called a ARDUOUS task."
At any stage of our lives we are going to encounter what may seems to us as hard jobs, it might be in school, home or even in our career (place of work).
HARD JOBS are STRESSFUL and DEMANDING. One need to be ok mentally, emotionally and physically to be able to solve this tasks.
Few examples of jobs that many called hard jobs are Stuntman, soldier, pilot, Communication Tower Climber, oil rig worker, Search and Rescue and so on.
Please not that HARD JOBS is not the same as HARD WORK(which deals with being diligent).