Which of the following local winds is found in Alpine valley ?

The correct answer is (b), Foehn.

A Foehn is a warm, dry downslope wind that occurs in the lee of mountains. It is caused by the adiabatic warming of air as it descends the mountain slopes. Foehn winds can be very strong and can cause significant damage to property.

The other options are incorrect because they are not found in Alpine valleys.

• Sirocco is a hot, dry wind that blows from the Sahara Desert across North Africa and into southern Europe.
• Harmattan is a hot, dry wind that blows from the Sahara Desert across West Africa.
• Khamsin is a hot, dry wind that blows from the Sahara Desert across Egypt.