The subordinate clause starts with a subordinating conjunction and contains the entire dependent clause. Because is a subordinate conjunction and makes the clause dependent because you need to know what's next. Hopefully answer choice D has all the right pieces. The main clause is "it is revolutionizing medical research". This clause is a complete idea by itself and is not a subordinate clause.
<span>The creation of the organization "Umkhonto we Sizwe" was because violence in the country was inevitable, since their attempts to make demands in a peaceful matter revert to the force of the government.</span>
You should try making goals like paying more attention in class, getting straight A's and/or B's, asking more questions in class, the last one is your choice because i dont really know what else to tell you think of goals you want to achieve.