Corporation I think I’m most likely wrong sorry
Not all of the published works are copyrighted
<span>The language of the Anglo-Saxons (up to about 1150), a highly inflected language with a largely Germanic vocabulary, very different from modern English.</span>
A - Although he denies them, Dr. Vasequez faced several scandals last year.
A complex sentences must have both a dependent clasuse (although he denies them) and an independent clause (Dr. Vasquez faced several scandals last year.
Options B and D are compound sentences (two independent clauses) and option C is a simple sentence.