Answer:
In early June 1776, Jefferson began writing and he took three weeks to finish the first draft
Step-by-step explanation:
Starting two sentences with the name Jefferson does not provide a sense of variety to the sentence, thus when writing, we need to do everything possible to improve sentence variety. To improve sentence variety in Sentence 2, first we ensure the sentence does not start with the name Jefferson, and hence it becomes "In early June 1776, Jefferson began writing and he took three weeks to finish the first draft".