Answer: The sentence that contains both a cause and an effect is B. “Her brother placed a housework-wanted ad in a local paper, and Katherine was soon hired as a governess with a wealthy family”.
Explanation: Different logical relationships can be established between sentences or within the same sentence. One of them is<u> the cause-effect relationship, which consists in presenting an event and its consequence or effect</u>. In sentence B.,<u> the fact that her brother placed an ad in the newspaper is the cause of Katherine's hiring</u>. In that way, the fact that Katherine was hired as governess is the effect of the idea presented in the first clause.
Witness combines the genre of the thriller, western and melodrama, and brings together the two very different worlds of the rural Amish and the city police.