Sentence Correction

Senator Lasker has proposed legislation requiring that employers should retain all older workers indefinitely or show just cause for dismissal.
(A) that employers should retain all older workers
(B) that all older workers be retained by employers
(C) the retaining by employers of all older workers
(D) employers’ retention of all older workers
(E) employers to retain all older workers

OA e

dont we need 'that' after require here

My vote is E---straight out of Strunk and White's elements of Style. "That" is the most overused word in the essays I have edited and I very often eliminate it without consequence. It's just better writing.