The answer to this is D. There are different types of conjunctions available. Definition conjunctions are meant to link phrases or other words together. The other types of conjunctions are subordinating, correlative, and coordinating. Take note that the most common conjunction is “and” but this is not ideal an exchange for because. The other given examples will change the whole meaning of the sentence if they would be used.
For example, but is normally used when the second phrase will not coincide with the first phrase of the sentence. Or cannot be used because there are no options available. Yet is used interchangeably with “but” and cannot be used to exchange with “because”.