1. Active management of the compost system.
2. Building a bigger pile.
3. Adding a compost starter/inoculant/catalyst.
4. None of the above.

You are correct!  The answer is "a.  Active management of the compost system."

Composting or decomposition can be accelerated through the active management of your compost pile, including the following basic steps:

• Balance high carbon leaves with a source of nitrogen.
• Add moisture as you build and turn your pile, but do not over saturate the pile.
• Turn your pile once per week.
• Use your unfinished compost as mulch.