<span>The given
sentence is an example of a compound-complex sentence because it consists of
two independent clauses which are “These
writings have been determined to be as old as 2,600 years” and “they must be carefully
protected behind glass” and one dependent clause which is “because they are so
old”.</span>
1.) A.) Algernon eavesdrops on Jack while he's conversing with Gwendolyn. 2.) D.) I believe is the correct answer. Algernon made up the invalid Bunbury in order to travel into the country whenever he pleased.