How can the sentences in this paragraph be improved? Calcium titanate is also known as calcium titanium oxide. It is an inorganic compound with the chemical formula CaTiO3. In its mineral form it is called perovskite. It was named after Russian mineralogist L. A. Perovski (1792–1856). Perovski discovered it. Calcium titanate is a colorless solid. However, perovskite is often colored. The coloration results from impurities. Please choose the correct answer from the following choices, and then select the submit answer button. a. Rewrite to place contextual information at the beginnings of sentences. b. Rewrite to place new information at the ends of the sentences. c. There is nothing wrong with the sentences in the paragraph. d. Combine sentences to vary sentence length.

In the given paragraph, the sentences seem quite choppy that if not only affecting the meaning and significance of the idea but also lose the readers' interest in the reading due to the unnecessary breaks that destroy the smooth flow of thoughts. Thus, the sentences could be improved by 'combining or merging the sentences to elongate the choppy length of sentences that would assist in conveying complete and related thoughts constructively. For example;

'Calcium Titanate, also known as calcium titanate oxide, is an inorganic compound with the chemical formula CaTiO3.'

'In its mineral form, it is called perovskite which was named after Russian mineralogist L. A. Perovski (1792–1856) who discovered it.'

These sentence combines the two or more sentences of the paragraph to offer a complete and coherent thought. Therefore, option D is the correct answer as it correctly displays the way the sentences could be revised to enhance its efficacy.