Directions: In the question, six sentences (A), (B), (C), (D), (E), and (F) are given, rearrange these given six sentences in a particular sequence to form a meaningful paragraph. Sentence (A) is fixed as the first sentence. Answer the questions given.
(A) Marie Curie was a renowned physicist and chemist who conducted pioneering research on radioactivity.
(B) Her contributions to science have had a lasting impact, with her research laying the foundation for significant developments in both scientific thought and medical treatments.
(C) She was the first woman to win a Nobel Prize for her extraordinary contributions and remains the only person to have won Nobel Prizes in two different scientific disciplines, namely Physics and Chemistry.
(D) She died in 1934 from aplastic anemia, a condition believed to be caused by _____ exposure to high levels of radiation during her research, highlighting the risks faced by early pioneers in this field.
(E) Born in Warsaw, Poland, in 1867, she pursued her higher education in Paris and eventually became a naturalized French citizen, significantly contributing to the scientific community in France.
(F) Together with her husband, Pierre Curie, she discovered the elements polonium and radium, leading to groundbreaking advancements in the understanding of radioactivity.
There is a blank '_______' in the sentence 'D', which of the following word can fill in the blank both grammatically and meaningfully?
I. prolong
II. prolonged
III. prolonging