During synapsis the number of fibre in each chromosome is?

The correct option is A $2$
Meiosis is the characteristic division of the reproductive cells. It is also called a reduction division because, in this, the parent cell produces four daughter cells each having half the number of chromosomes present in the parent cell. In the zygotene stage, the homologous chromosome begins to pair length to length and point to point in a zipper-like manner. This pairing is called synapsis. The spindle equally divides the chromosomes in a parental cell into two daughter cells. There are 2 spindles formed in each chromosome.

So, the correct option is '2'.