__ lasting 5 to 10 seconds can help reduce stress. Handshakes . B Hugs D C là Eye contact D Smiles

## Step1: Identify the Context<br />### The question asks which action lasting 5 to 10 seconds can help reduce stress. We need to identify the correct option from the given choices.<br />## Step2: Analyze Each Option<br />### A. Handshakes: Typically brief and not known for reducing stress significantly.<br />### B. Hugs: Known to release oxytocin, which can reduce stress when lasting 5 to 10 seconds.<br />### C. Eye contact: Can be calming but is not specifically linked to stress reduction in this context.<br />### D. Smiles: Generally positive but not directly linked to stress reduction over a specific duration.<br />## Step3: Select the Correct Answer<br />### Based on the analysis, hugs are most commonly associated with stress reduction when lasting 5 to 10 seconds.