Final answer:
The appearance of lenticular clouds and strong Westerly winds suggests the likely presence of turbulence and mountain waves, which are characteristic outcomes when winds interact with topography.
Step-by-step explanation:
The presence of lenticular clouds and strong Westerly winds encountering ranges between Bankstown and Cowra indicates that one could expect turbulence and mountain waves. Lenticular clouds often form on the downwind side of mountains and are a sign of stable air that flows over the mountains and then oscillates in waves. These conditions are known to pilots as a mountain wave, which can cause significant turbulence. These conditions are also consistent with the Rain Shadow Effect, where windward slopes receive high levels of precipitation, leading to dry and often turbulent conditions leeward. Therefore, the most likely scenario to expect would be option a) Turbulence and mountain waves.