Which one of britain’s three native coniferous trees has an elasticity that made it ideal for bow-making in the middle ages?

Yew tree

Explanation:

Yew trees are coniferous trees found in Western, Southern and Eastern Europe, it is often referred to as the tree of death because of its poisonous nature when ingested. It is hard and also has high elasticity making it very useful in the production of longbows in the middle ages.