Read the following context and choose the best option to answer the question.
Context: The republican party does n't represent me or my values any more than the democratic party does . My liberal friends think this is a step in the right direction , but unless I vote for their guy it 's still not enough . But that guy does n't represent me , either . My Republican friends do n't understand how I could turn my back on the " right " party .
Question: What may be a plausible fact about the speaker themselves ?
Options: 
- They do n't do any research on their own .
 - They do n't understand the political system .
 - They follow what their friends do .
 - They think for themselves and have a mind of their own .


They think for themselves and have a mind of their own .