A. Vladimir Putin
B. Dmitry Medvedev
C. Mikhail Gorbachev
D. Boris Yeltsin
🧠 Explanation:
Geneva Accord was signed during Mikhail Gorbachev’s tenure, highlighting diplomatic negotiations. “Signed” is a past participle verb; “president” is a noun. Alternatives like “executed” or “formalized” could be used. This event reflects international agreements and political conflict resolution strategies.