<em>The right answer would be option D. when school funds are sufficient again, we will reinstate the arts programs.</em>
<em>What makes this option the most fitting one is the use of refined register and a standard compound sentence organization. </em>Language register is refined through the use of compound nouns<em> i.e. school funds </em>, and a prefixed verb i.e. reinstate. At the same time, the sentence is a compounded one, clearly organized by having a dependent clause be followed by an independent one,.