What does Niharika need to do first if she wants to enable automatic item updates for the price and availability of her products?
Add schema.org structured data to her landing pages
Submit yes for the price and availability attributes
Nothing, she just needs to enable the setting in Google Merchant Center
Link her Google Merchant Center and AdWords accounts
Enabling automatic item updates in your account allows us to update your items on Google Shopping based on the structured data markup we find on your website. Issues such as latency between updates on your website and updates to your data submissions to Google Shopping can result in inaccurate or stale product data.
Read more here: https://support.google.com/adwords/answer/3246284