Opportunity opp=[select id ,stagename from opportunity limit 1] Given the code above, how can a developer get the label for the stagename field?

While writing a test class that covers an OpportunityLineItem trigger, a Developer is unable to create a standard PriceBook since one already exists in the org.
How should the Developer overcome this problem?

An Apex method, getAccounts, that returns a List of Accounts given a search Term, is available for Lighting Web components to use. What is the correct definition of a Lighting Web component property that uses the getAccounts method?

A developer needs to have records with specific field values in order to test a new Apex class.
What should the developer do to ensure the data is available to the test?

A developer migrated functionality from JavaScript Remoting to a Lightning web component and ... existing getOpportunities method to provide data.