**Core Concept:** The Tokyo Convention Act of 1975 refers to a United Nations (UN) treaty aimed at controlling the development, production, and use of chemical and biological weapons.

**Why the Correct Answer is Right:** The correct answer, **D**, is the Tokyo Convention, which is the official name for the Convention on the Prohibition of the Development, Production, and Stockpiling of Bacteriological (Biological) and Toxin Weapons and on their Destruction. This treaty, signed in 1975, is one of several efforts by the UN to eliminate or regulate the production and use of such weapons.

**Why Each Wrong Option is Incorrect:**

A. **Option A (Chemical Weapons Convention)**: This is another UN treaty, signed in 1993, specifically focusing on chemical weapons. The Tokyo Convention, however, addresses both chemical and biological weapons together.

B. **Option B (Genocide Convention)**: The Genocide Convention is an entirely different treaty from the Tokyo Convention, dealing with the prevention and prosecution of mass killings and crimes against humanity.

C. **Option C (Paris Peace Accords)**: The Paris Peace Accords refer to a series of agreements between the United States and North Vietnam, signed in 1973, and are not related to the Tokyo Convention or biological weapons.

E. **Option E (Vienna Convention)**: The Vienna Convention is a treaty focusing on diplomatic relations and immunity of diplomats, not relevant to the Tokyo Convention or biological weapons.

**Clinical Pearl:** The Tokyo Convention is a vital component of global efforts to regulate and control the development, production, and stockpiling of biological weapons. By signing this treaty, countries commit to destroying and not producing these harmful weapons, ensuring a safer world and reducing the risks of biological warfare.