Doğru seçenek B şıkkıdır.
Açıklama:
- İkinci tip koşul cümlesi (second conditional) kurallarıyla uyumludur:
“If we were to live on a mountain top higher than a thousand meters, we would have to wear oxygen masks to breathe.” - Diğer şıklar ya anlamsal olarak tutarsız ya da koşul yapısını sağlayamıyor.
Özetle, “Eğer bin metreden daha yüksek bir dağ zirvesinde yaşasaydık, nefes alabilmek için oksijen maskesi takmak zorunda kalırdık.” anlamını veren B şıkkı doğru cevaptır.
Answer: B
Explanation: Option B — “If we were to live on a mountain top higher than a thousand meters,” — forms a correct conditional with the result clause “we would have to wear oxygen masks to breathe.” The structure and logic fit: higher altitude → thinner air → need for oxygen masks.
Why the others don’t work:
- A is ungrammatical/illogical with the result clause.
- C (“Since people realise…”) is a causal clause and doesn’t pair sensibly with the hypothetical result.
- D (“But for the destructive attitudes…”) needs a different structure to express consequence.
- E (“Unless we equip ourselves with the essential tools for climbing”) is about equipment for climbing, not breathing at high altitudes, so it doesn’t logically lead to wearing oxygen masks.
So B is the best choice.