Step 1: Recall the BOP structure:
Current Account = Balance of Trade (goods) + Balance of Invisibles (services + income + transfers).
Step 2: Isolate what "trade" traditionally means in economics:
"Trade" historically and technically refers to merchandise/visible trade — the physical movement of goods across borders — as distinct from invisible items like services.
Step 3: Match the option:
Only the option that restricts itself to goods captures this precise, narrower definition; the services-only option describes invisibles instead.
Final Answer:
Option B.