Final answer:
No, when speaking to your professor, you shouldn't use "tu". The correct option is 2. In an academic setting, it is more appropriate to use the formal "usted" when speaking to your professor instead of the informal "tu" to show respect and maintain a professional tone. Using formal language is part of making a good first impression and is a recommended practice.
Step-by-step explanation:
When speaking to your professor, particularly in a formal or academic setting, it is recommended to use the formal form of address. In languages where there is a formal and informal way of addressing others, such as Spanish, using "usted" instead of "tu" shows respect and maintains a professional tone. This aligns with academic customs where a level of formality is observed between students and faculty.
When in doubt about which form to use, considering whether you would want to make a good first impression and how you would address the professor in an email or over the telephone can guide you towards the more formal address. Additionally, if you find a topic challenging or intriguing, it's encouraged to talk to your professor or teaching assistant to express your interest or seek assistance, again using formal language.
In summary, using formal address terms with a professor is a sign of respect and is part of good academic practice. Should there be any confusion, consult directly with the professor to clarify their preferred form of address.
The correct option is 2.