Explanation

Amazon Translate is the correct AWS service for this scenario because:

• Amazon Translate is a neural machine translation service that delivers fast, high-quality, and affordable language translation
• It supports translation between multiple languages, including English to French and Japanese
• It's specifically designed for text translation tasks like product descriptions

Why the other options are incorrect:

• Amazon Polly (A): This is a text-to-speech service that converts text into lifelike speech, not for language translation
• Amazon Transcribe (C): This is an automatic speech recognition service that converts speech to text, not for language translation
• Amazon Textract (D): This service extracts text and data from scanned documents, not for language translation

For a global e-commerce platform needing to translate product descriptions across multiple languages, Amazon Translate provides the most appropriate and cost-effective solution.