Because he doesn’t like the tight schedule in the company, Robin

Because he doesn’t like the tight schedule in the company, Robinson decides to quit the job and start an online store, （compound sentence）
【正确答案】：Robinson decided to quit the job and start an online store, for he doesn’t like the tight schedule in the company. /Robinson doesn’t like the tight schedule in the company, so he decided to quit the job and start an online store.
【题目解析】：compound sentence的意思是并列句，for表示“因为”、“由于”， 连接并列句时，只表示一种推测或解释，后面的分句通常表示间接的推测原因，前句表示结果，后句表示原因。例如： The electric current must have been turned off, for the light went out. 想必是停电了，因为灯灭了。这里我们用for来连接两句并列句，表示Robinson辞职开网店的原因是因为不喜欢公司紧张的工作安排。当然也可以用其他表示因果关系等等连词来连接两个句子，例如so。