Answer:
1. Identify the problem.
2. Evaluate the solutions.
3. Brainstorm possible solutions.
4. Choose and implement the solution.
If this question has the same list of options like that of the previous one, it would be "introducing characters". Although introduction of characters may contribute suspense, depending on the way the character is created, <span> </span>making<span> your readers worry about all the </span>ways<span> your hero's plans is still the best way to build suspense.</span>