The answer to a strong research question leads to

The correct answer is B). A thesis, or topic statement.  

The answer to a strong research question leads to a thesis or topic statement.  This is because if you have investigated properly, researching the facts and confirming the sources, then it can lead you to a thesis or topic statement.

A thesis defines the scope and purpose of the document. It must be argued, limited and unified. A correct topic sentence improves the organization of an essay for a better understanding.

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.