The correct answer is D. The president can't make up his mind about running for reelection.
Step-by-step explanation:
Internal conflict or character vs. self occurs in the case the conflict in a story emerges in the character itself or the character's mind, this includes internal conflicts related to dilemmas, taking decisions, contradictory feelings, feeling guilty, etc. Considering this, the statement that is an example of this conflict is "the president can't make up his mind about running for reelection" because in this case the conflict is not external but emerges within the character as he is struggling in the process of making a decision.