The correct answer is C. Local museums, parks, and businesses offer low-cost learning experiences that connect students to the community.
Step-by-step explanation:
The purpose of a claim is to express in a sentence your position about one situation or issue. This means in the case presented, the claim should state the importance of school field trips as you are required to write a speech to convince teachers about this. Additionally, the claim should state a reason or point that shows the importance of school fields while avoiding to include information not related to the topic.
According to this, the best claim is "Local museums, parks, and businesses offer low-cost learning experiences that connect students to the community" because this shows your position about the topic and provides a reason which is "low-cost learning experiences" that are essential to "connect students to the community". Also, this focuses on the topic and avoids adding unnecessary information.