To solve this problem, we need to match the items in Column I with the appropriate descriptions in Column II. Let's analyze each item:$\newline \bullet$a. Synapsis aligns homologous chromosomes:$\newline$ - Synapsis is the pairing of homologous chromosomes during meiosis.$\newline$ - This process occurs during the zygotene stage of prophase I.$\newline$ - Therefore, this matches with (ii) Zygotene.$\newline \bullet$b. Synthesis of RNA and protein:$\newline$ - The synthesis of RNA and proteins occurs during the G₂-phase of the cell cycle.$\newline$ - This is the phase where the cell prepares for mitosis.$\newline$ - Therefore, this matches with (iii) G₂-phase.$\newline \bullet$c. Action of enzyme recombinase:$\newline$ - Recombinase is an enzyme involved in the process of genetic recombination.$\newline$ - This occurs during the pachytene stage of prophase I, where crossing over happens.$\newline$ - Therefore, this matches with (v) Pachytene.$\newline \bullet$d. Centromeres do not separate but chromatids move towards opposite poles:$\newline$ - This describes the behavior of chromosomes during anaphase I of meiosis.$\newline$ - In anaphase I, homologous chromosomes separate, but sister chromatids remain together.$\newline$ - Therefore, this matches with (iv) Anaphase-I.$\newline$Now, let's match the items from Column I with Column II:$\newline a \rightarrow ii, b \rightarrow iii, c \rightarrow v, d \rightarrow iv \newline$This corresponds to Option 2.