The usages of Conjunctions in Chinese

The correct answer is B.

Translation:

Nǐ bú qù pǎobù ma? Li Hua:你不 去   跑步   吗? Aren’t you going running?

Bú qù. Sam:不  去。 No.

Wèishénme? Li Hua:为什么? Why?

Yīnwèi tiānqì bùhǎo, suǒyǐ wǒ bùxiǎng qù pǎobù. Sam:因为    天气    不好,所以  我   不想    去    跑步。 I’m …