Answer : 2. "Meiosis"
Explanation :

Answer: B) Meiosis Explanation: Synapsis is the pairing of two homologous chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis. It is also called as Syndesis.