Question: He predicted mathematically in 1931 that conservation laws required the existence of a new particle which he proposed to call the neutron
Please fix the punctuation.
Fixed: [He predicted mathematically, in 1931, that conservation laws required the existence of a new particle which he proposed to call the "neutron".]

Question: Having a network helps businesses become more efficient and productive
Please fix the punctuation.
Fixed: [Having a network helps businesses become more efficient and productive.]

Question: You can download the free demo version of this software and evaluate the recovery results
Please fix the punctuation.
Fixed: [You can download the free demo version of this software and evaluate the recovery results.]

Question: In this DROPS video we show you a way to pick up stitches from a garter stitch edge without using the working yarn
Please fix the punctuation.
Fixed:
[In this DROPS video we show you a way to pick up stitches from a garter stitch edge, without using the working yarn.]