Choose the sentences that is closest in the meaning to the root sentence or best combines the two given sentences

Choose the sentences (A, B, C or D) that is closest in the meaning to the root sentence or best combines the two given sentences.
51. It was very hot. He switched on the fan.
A. It was very hot, so he switched on the fan.
B. Because he switched on the fan, it was very hot.
C. It was very hot, but he switched on the fan.
D. So it was very hot, he switched on the fan.
52. You will miss the train. You must hurry.
A. You must hurry, so you will miss the train.
B. Because you must hurry, you will miss the train.
C. You must hurry, or you will miss the train.
D. Missing the train means you must hurry.
53. She had a sunburn. She didn’t apply sunscreen on her body.
She had a sunburn or she didn’t apply sunscreen on her body.
B. Although she had a sunburn, she didn’t apply sunscreen on her body.
C. Because she had a sunburn, she didn’t apply sunscreen on her body.
D. She had a sunburn because she didn’t apply sunscreen on her body.
54. Helen has a temperature. She has a headache.
A. Although Helen has a temperature, she has a headache.
B. Helen has a temperature or a headache.
C. Helen has a temperature and a headache.
D. Helen has a temperature because she has a headache.
55. You have to get up early. You will be late for school.
A. Because you have to get up early, you won’t be late for school.
B. Get up early or you will be late for school.
C. You have to get up early and you will be late for school.
D. Although you get up early, you will still be late for school.