• Create an OData 2.0 External Data Source named 'Mobile Devices' using the following URL: https://phone-odata-demo.herokuapp.com/devices.svc/
• Use the 'AtomPub' format and the 'Anonymous' Identity Type for the 'Mobile Devices' External Data Source.
• The 'Mobile Devices' data source must validate and sync the 'phone_plans' table to result in an external object with the API name 'Phone_Plan__x'.
• The 'Mobile Devices' data source must validate and sync the 'phones' table to result in an external object with the API name 'Phone__x'.
• Note that you will need to adjust the Object Names for the two external objects from the default setting after the initial sync.

all the thing have been done but i am getting following errorwhile checking challenge.

My answer is C... What do you think please ?

The marketing team at UC wants to send an email to each lead received from its website. The country of the incoming lead should determine the language of the email that will be sent to the lead.
How can a system admin automate this process?
a. Create an email template for each language and an assignment rule to send the appropriate template.
b. Create a single email template and use the translation workbench to translate and send the appropriate template..
c. Create an email template for each language and an auto-response rule to send the appropriate template.
d. Create an email template for each language and a workflow alert to send the appropriate template.

Trailhead chhalendge:
Create a flow to streamline entry of new accounts, contacts, and opportunities.

error: 
UPSERT --- UPSERT FAILED --- ERRORS : (REQUIRED_FIELD_MISSING) Required fields are missing: [StageName] --- for SFDC record with ID : null,