MGMAT CAT1:
Many employees in the energy sector must choose between jobs that offer substantially higher pay, but requiring long hours, physically taxing labor, or relocation to remote, sparsely populated areas, or less physically intense though lower-paying jobs in larger metropolitan areas.
a) that offer substantially higher pay, but requiring long hours, physically taxing labor, or relocation to remote, sparsely populated areas, or less physically intense though lower-paying jobs
b) that offer substantially higher pay, but that require long hours, physically taxing labor, relocation to remote or sparsely populated areas, or less physically intense and lower-paying jobs
c) offering pay that is substantially higher, but that requires long hours, physically taxing labor, or relocating to remote, sparsely populated areas, or lower-paying jobs that are less physically intense
d) that pay substantially higher but requiring long hours, physically taxing labor, relocating to remote or sparsely populated areas, and lower-paying jobs that are less physically intense
e) offering substantially higher pay, but requiring long hours, physically taxing labor, or relocation to remote, sparsely populated areas, and less physically intense, but lower-paying, jobs
In E - between X and Y ... So X must be parallel to Y.
X - substantially higher pay
Y - less physically intense
Both are adverb modifiers and thus parallel..
I do understand offering, but requiring is parallel to.. But: Between X and Y , X and Y must be parallel too