Steppe (temperate continental) climate is not experienced in Perth.

Explanation:
The steppe climate, also known as a temperate continental climate, is characterized by hot summers and cold winters, with limited precipitation. This climate type is typically found in the interior of continents, far from large bodies of water.

Steppe Climate Characteristics:
- Hot summers: Steppe climates have relatively high temperatures during the summer months, with average temperatures often exceeding 25°C (77°F).
- Cold winters: Winters in steppe climates are usually cold, with average temperatures often dropping below freezing.
- Low precipitation: Steppe climates are known for their limited rainfall, with annual precipitation typically ranging from 250 to 500 mm (10 to 20 inches).
- Wide temperature range: Steppe climates experience a significant temperature range between day and night, as well as between seasons.

Analysis of Options:
a) Pretoria: Pretoria, the administrative capital of South Africa, experiences a steppe climate. It has hot summers and cold winters with limited precipitation, making it suitable for this climate type.
b) Saskatchewan: Saskatchewan, a province in Canada, is known for its steppe climate. It has hot summers, cold winters, and limited rainfall, making it a typical example of this climate type.
c) Perth: Perth, a city in Western Australia, does not experience a steppe climate. It has a Mediterranean climate, characterized by mild, wet winters and hot, dry summers. The precipitation pattern and temperature characteristics of Perth do not align with those of a steppe climate.
d) Buenos Aires: Buenos Aires, the capital of Argentina, does not have a steppe climate. It has a humid subtropical climate, with hot summers, mild winters, and a relatively high amount of rainfall throughout the year.

Conclusion:
Based on the analysis, it can be concluded that the steppe (temperate continental) climate is not experienced in Perth, Western Australia. The climate in Perth is more aligned with a Mediterranean climate, characterized by mild, wet winters and hot, dry summers.