The wood of this tree is very light, yet very tough and shock resistant. It will not incur dent nor splinter on being slashed. It is used to prepare cricket
bats.

Wood commonly used for making cricket bat is salix. Blade of cricket hat is made of Salix and handle is made of Morus alba. It is a medium-sized to large deciduous tree growing up to 10-30 m tall, with a trunk up to 1 m diameter and an irregular, often-leaning crown. The bark is grey-brown, and deeply fissured in older trees. The shoots in the typical species are grey-brown to green-brown. The wood is tough, strong, and light in weight, but has minimal resistance to decay. The stems from coppiced and pollarded plants are used for basket-making. The bark tannin was used in the past for tanning leather. The wood is used to make cricket bats

answer; migrate from a region;

i would say b. research typically uses a variety of sources