While it's common practice to place only one independent clause on its own baseline in a compound sentence, it's not a hard and fast rule.
Here's why:
* Emphasis: The placement of a clause on its own baseline can emphasize that particular part of the sentence.
* Clarity: If a compound sentence is very long or complex, placing both independent clauses on separate baselines can improve readability.
* Style: Ultimately, the decision of whether to place one or both independent clauses on their own baselines comes down to style and preference.
Example:
* One clause on its own baseline:
* "The dog barked loudly, and the cat hissed back."
* Both clauses on their own baseline:
* "The dog barked loudly. And the cat hissed back."
Both versions are grammatically correct. The first example emphasizes the second part of the sentence (the cat's response), while the second example gives equal emphasis to both parts.
Therefore, it's more accurate to say that while placing only one independent clause on its own baseline is common, it is not a strict rule.