Final answer:
Martin, a brain surgeon performing complex surgeries, would likely have an optimal arousal level that is moderate to somewhat high, in accordance with the Yerkes-Dodson law.
Step-by-step explanation:
The question pertains to the optimal arousal level for a brain surgeon prior to performing a complex surgery. According to the Yerkes-Dodson law, complex tasks are best performed when arousal levels are lower to ensure maximum performance, given the precision and patience required. Conversely, simple tasks may benefit from higher levels of arousal. Referring to the scenario of brain surgeon Martin, and considering the complexity of the surgeries he performs, his optimal arousal level would likely be moderate to somewhat high depending on his personal ability to manage stress and maintain focus under pressure.