A.Change the method signature to be global static, not public static.

B.Change the argument from JSONObject to String.

C.Remove line 06 from the Apex Controller and use firstName In the return.

D.Annotate the entire class as @AuraEnabled instead of just the single method.

A.Use seeAllData=true

B.Encapsulate code in Test.startTest() and Test.stopTest()

C.Call the class' "execute" method

D.Limit the amount of records you test to < 200

A.Database

B.Apex Code

C.Profiling

D.System

A.Is based on REST principles and is optimized for loading or deleting large sets of data. You can use it to query, queryAll, insert, update, upsert, or delete many records asynchronously by submitting batches

B.Provides a powerful, convenient, and simple REST-based web services interface for interacting with Salesforce. Its advantages include ease of integration and development, and it's an excellent choice of technology for use with mobile applications and web projects

C.Is used to to create, retrieve, update or delete records, such as accounts, leads, and custom objects, and allows you to allows you to maintain passwords, perform searches, and much more

D.Is used to to retrieve, deploy, create, update, or delete customizations for your org. The most common use is to migrate changes from a sandbox or testing org to your production environment

A.400

B.500

C.200

D.1000

E.100