Users at Universal Containers often need to update the status and amount of an opportunity using the Salesforce1 mobile application

How can this common update to expedited?

1. Create a mobile-only page layout of the Opportunity Object
2. Create a global update action on the Chatter feed.
3. Create a custom action on the Opportunity object using a Visualforce page.
4. Create an object-specific update action on the Opportunity Object.

Ans: 1 & 2