Answer:
<em>The option that uses a correct subordinate conjunction to join the sentences together is </em><em>After I finish my homework, I go to the park.</em>
Explanation:
A <u>subordinating conjunction</u> is a word or phrase used to link a dependent clauses to an independent one. This word usually indicates the relationship between both clauses: time, place, cause and effect, etc. Some of the most frequently used subordinating conjunctions are: <em>after, although, as, because, since, unless, until, when, while. </em>In this case, the conjunction used is <em>after</em>, the <u>independent clause</u> is<em> I go to the park</em>, and the <u>dependent clause</u> is <em>After I finish my homework.</em>