Final answer:
Only a handful of Greek bronze sculptures survived due to the value of bronze and its reuse for weapons and new sculptures. Surviving bronze sculptures were mainly recovered from shipwrecks.
Step-by-step explanation:
Only a handful of Greek bronze sculptures survived mainly because bronze was a valuable material that could be melted down and reused. Throughout history, many Greek bronzes were melted down to forge weapons or create new sculptures. The surviving Greek bronzes that we have today mainly survived because of shipwrecks, which prevented the material from being reused, and these sculptures have been recovered from the sea and restored.