Many things about this piece of literature are hard to understand. which revision would make this sentence more precise? the author's use of foreign words makes this piece challenging. the author's work of literature is full of many confusing pieces. this literary work has many challenges and pitfalls. the literary work consists of many things that are difficult.

The author's use of foreign words makes this piece challenging.

Explanation:

This is the best way to explain the challenges that are present in a particular piece. The original sentence stated that "many things" were complicated. This is too vague and unlikely to help the reader understand what the difficulties consist of. Similarly, the other options use phrases such as "many confusing pieces," "full," "many challenges and pitfalls" and "many things." These are very vague and informal. The first option, however, states that the difficulty lies in the author's use of foreign words, which helps us understand the difficulties better.

actually the answer would be c.) jane addams worked hard to improve the lives of less fortunate people.

yes, we appreciate these things!