The novel's protagonist, a brilliant but troubled scientist, is obsessed with finding a way to reverse the aging process. His research, however, leads him down a dark path, filled with ethical dilemmas and unforeseen consequences. The scientist's obsession ultimately consumes him, leaving him isolated and alone.
","stem_html":"Which choice provides the best punctuation for the sentence? The scientist's obsession ultimately consumes him, ______ leaving him isolated and alone.
","rationale_html":"The comma is the best choice here because it is used to separate two independent clauses in a compound sentence. The first clause, "The scientist's obsession ultimately consumes him", is a complete sentence. The second clause, "leaving him isolated and alone", is also a complete sentence. A comma is used to separate two independent clauses that are joined together by a coordinating conjunction.
","correct_answer":["B"],"has_media":false,"has_mathml":false,"has_table":false,"source_created_at":null,"source_updated_at":null,"options":[{"label":"A","content_html":"leaving him isolated and alone.
","ord":0},{"label":"B","content_html":", leaving him isolated and alone.
","ord":1},{"label":"C","content_html":"; leaving him isolated and alone.
","ord":2},{"label":"D","content_html":"—leaving him isolated and alone.
","ord":3}],"attribution":{"source_id":"opensat","source_name":"OpenSAT community question bank","rights_holder":"OpenSAT contributors","canonical_url":"https://github.com/Anas099X/OpenSAT","retrieved_from":"https://pinesat.duckdns.org/api/questions","attribution":"Reading and Writing practice questions from the OpenSAT community question bank, whose licence permits free use of the database.","disclaimer":"OpenSAT items are community-written or AI-generated practice material, not official College Board questions; quality varies.","license":"OpenSAT LICENSE.md: the database may be used freely, including commercially, without restriction. Code is separately restricted.","redistributable":true,"item_count":1406}}