1. Because she felt cold, Susan put on her coat.
2. Because Susan felt cold, she put on her coat.
3. Feeling cold, Susan put on her coat.
(Which one is correct? Are all acceptable and the same?)
All three are correct -- and mean the same.
All three of these sentences are grammatically correct, and they convey the same meaning. The difference lies in the emphasis and structure of the sentences.
1. "Because she felt cold, Susan put on her coat." In this sentence, the cause (feeling cold) is stated first, followed by the effect (putting on her coat). This structure highlights the cause-effect relationship between feeling cold and putting on the coat.
2. "Because Susan felt cold, she put on her coat." This sentence is similar to the first one, but it places more emphasis on Susan as the subject of the sentence. It presents the cause (Susan feeling cold) first and the effect (putting on her coat) second.
3. "Feeling cold, Susan put on her coat." This sentence uses a different structure called a participle phrase. By using the present participle "feeling cold," the sentence conveys the same meaning as the previous two but with a slightly different emphasis. It focuses on the action of feeling cold as the reason for putting on the coat.
In summary, all three sentences are grammatically acceptable and convey the same meaning, but they vary in their emphasis and sentence structure.