Final answer:
The vocabulary words and their meanings from the given sentences are scrutiny (careful examination), disseminate (spread), propensity (tendency), and insidious (sly, deceitful).
Step-by-step explanation:
The vocabulary words from the given sentences are:
- scrutiny - Something that is under scrutiny is being carefully examined.
- disseminate - The best way to disseminate ideas is through the Internet.
- propensity - Round objects have (n) propensity to roll downhill.
- insidious - The salesmen used insidious tactics to swindle the customers.
Learn more about vocabulary words and their meanings