Question 1
A drought-affected region experiences a poor harvest. Using the malnutrition-infection cycle as a framework, which sequence best illustrates the bidirectional feedback described in this model?No clue? Show me the answer
Correct answerCorrect!
IncorrectStep-by-step walkthrough
Choose a solution method
Method #1Direct reasoningStep 1: Identify what is being tested
The question asks specifically for the two-way malnutrition-infection cycle, not just any drought-related consequence.
Step 2: Apply the cycle's logic
The cycle requires malnutrition to weaken immunity leading to infection, AND infection to worsen malnutrition, forming a closed loop.
Step 3: Interpret option B
Option B shows exactly this: reduced intake weakens immunity causing infection, then infection increases demand and reduces intake, completing the loop.
Step 4: Select the answer
Only option B demonstrates the reinforcing, bidirectional pathway rather than a single linear chain, so B is correct.
Method #2Process of eliminationStep 1: Eliminate A
A describes an economic pathway (income to healthcare spending) but never returns to worsen malnutrition, so it is linear, not a cycle.
Step 2: Eliminate C
C describes migration and urban strain, which is a separate spatial interaction, not the immune-malnutrition feedback loop.
Step 3: Eliminate D
D describes agricultural decision-making and market exposure, unrelated to the biological infection-malnutrition mechanism.
Step 4: Compare with B
Only B contains both directions of causation -- malnutrition to infection and infection back to malnutrition.
Step 5: Confirm B
B is the only option matching the defining feature of the cycle: reinforcing, two-way causation.
Question 2
A country experiences a major disease outbreak. Border authorities close several key ports to contain the spread. According to the mechanism of trade disruption described in the food-health synthesis framework, what is the most direct effect this specific action has on food security in the importing region?No clue? Show me the answer
Correct answerCorrect!IncorrectStep-by-step walkthrough
Choose a solution method
Method #1Direct reasoningStep 1: Identify the mechanism asked about
The question isolates one specific mechanism: port closure, and asks for its direct trade-related effect.
Step 2: Apply the stated pathway
Port closures halt or slow cargo processing, and perishable goods spoil while waiting, directly reducing the volume of food reaching the market.
Step 3: Interpret the outcome
This spoilage reduces supply and can raise prices, worsening food access -- exactly what option B states.
Step 4: Select B
B correctly traces the direct supply-chain mechanism from port closure to reduced food availability.
Method #2Process of eliminationStep 1: Eliminate A
A confuses the biological immune pathway with the trade-disruption pathway; port closures do not directly cause malnutrition, they disrupt supply first.
Step 2: Eliminate C
C describes a labour-shortage effect from illness among farmers, not a consequence of a port closure specifically.
Step 3: Eliminate D
D is the opposite of what happens; port closures are often accompanied by quarantine, not a replacement for it.
Step 4: Compare mechanisms
Only B stays within the trade/transport mechanism explicitly described, rather than jumping to unrelated health or labour effects.
Step 5: Confirm B
B is the only option that correctly and directly traces port closure to spoilage and reduced supply.