Question

1. when may hazardous wind shear be expected?

oa. when stable air crosses a mountain barrier where it tends to flow in layers forming lenticular clouds.
ob. in areas of low-level temperature inversion, frontal zones, and clear air turbulence.
oc. following frontal passage when stratocumulus clouds form indicating mechanical mixing.

Explanation:

Hazardous wind shear is often associated with areas of low - level temperature inversion (where a stable layer of warm air overlies cooler air, creating a sharp change in wind speed or direction), frontal zones (where different air masses meet, causing rapid wind changes), and clear air turbulence (which can involve sudden wind shear). Lenticular clouds (Option A) are more related to mountain wave conditions rather than wind shear. Stratocumulus clouds after frontal passage (Option C) are more about general cloud formation due to mechanical mixing rather than specifically indicating hazardous wind shear.

Answer:

B. In areas of low - level temperature inversion, frontal zones, and clear air turbulence.