Explanation:
Academic honesty is an important value in education. It refers to the ethical practice of acknowledging and giving credit to the original authors or sources of information used in academic work. Violating academic honesty by engaging in plagiarism or cheating can have serious consequences and penalties.

Importance of Academic Honesty:
Academic honesty is vital for several reasons:
1. Integrity: Upholding academic honesty promotes integrity and ethical conduct among students. It fosters a culture of trust and fairness in academic environments.
2. Learning: Academic honesty encourages students to engage in independent research, critical thinking, and proper citation. It enhances the learning process by ensuring students develop their own knowledge and skills.
3. Originality: By practicing academic honesty, students are encouraged to produce original work that reflects their own thoughts and ideas. This promotes creativity and innovation.
4. Ethics: Honesty is a fundamental ethical value that is applicable in all aspects of life. By adhering to academic honesty, students develop a strong ethical foundation that extends beyond the classroom.

Penalties for Violations:
There are significant penalties associated with violating academic honesty, including:
1. Academic Consequences: Students who are found guilty of academic dishonesty may receive failing grades, be required to redo assignments or exams, or even face expulsion from educational institutions.
2. Professional Consequences: Violations of academic honesty can have long-term effects on a student's professional reputation. Employers and graduate schools often require candidates to provide proof of their academic integrity.
3. Legal Consequences: In some cases, academic dishonesty can lead to legal repercussions. Plagiarism, for example, can result in copyright infringement lawsuits.

Answer Justification:
The correct answer is option 'E': "such / that". This is because "such" is used to indicate the degree or extent of importance, and "that" is used to introduce a result or consequence. Thus, "such / that" is the appropriate construction to express the importance of academic honesty and the significant penalties attached to its violation.