To solve this problem, we need to identify the stage during which the synaptonemal complex dissolves. Let's analyze the stages of prophase I in meiosis:$\newline \bullet$Leptotene:$\newline$ - This is the first stage of prophase I where chromosomes start to condense and become visible.$\newline$ - The synaptonemal complex is not yet formed.$\newline \bullet$Zygotene:$\newline$ - During this stage, homologous chromosomes begin to pair up in a process called synapsis.$\newline$ - The synaptonemal complex starts forming to facilitate this pairing.$\newline \bullet$Pachytene:$\newline$ - In this stage, the synaptonemal complex is fully formed, and crossing over occurs.$\newline$ - The complex is intact to allow for genetic recombination.$\newline \bullet$Diplotene:$\newline$ - This is the stage where the synaptonemal complex begins to dissolve.$\newline$ - Homologous chromosomes start to separate, but remain connected at chiasmata where crossing over has occurred.$\newline$Therefore, the dissolution of the synaptonemal complex occurs during the diplotene stage.$\newline$This corresponds to Option 2: Diplotene.