"He has a low IQ so he is vulnerable to fraudulent business practices."
- "He has a low IQ so he is vulnerable to fraudulent business practices."
"he has a low IQ" 「彼は知的に少し低い」"he is not very intelligent" も使えます。
"he is vulnerable to ~" 「〜に騙されやすい」
"fraudulent business practices" 「悪質商法」"scams" 「詐欺」も言えます。