Universal Container’s Salesforce Admin created a field called Primary segment on the account object. He made this field required on the page layout and read-only in the field level security setting for the finance profile. How will the finance profile users enter a value in this field if it is going to be a read-only field?

Answer options:

A.Finance profile users need to enter a value in this field since it’s a required field on the page layout
B.Finance profile users will not be required to enter a value for this field since the field is read-only field in the field level security
C.A permission set need to be created to make users enter a value in this field
D.A workflow rule needs to be created to make users enter a value in this field

Correct Answer: B 
The finance profile users are not required to enter a value in the primary segment field since the field is read-only in the field level security. Whenever a field is set to be mandatory in the page layout and it is a read-only field in the field level security settings, then the field level security will override the page layout and the field will be a read-only field. 
Option A is incorrect because field level security overrides the page layout, so the field is not a required field anymore. 
Option C is incorrect because a permission set gives additional access to users. It doesn’t force users to enter a value for any field. 
Option D is incorrect because a workflow rule is used to automate a certain business process. It is not used to make users enter a value in any field. 
References:

https://help.salesforce.com/articleView?id=admin_fls.htm&type=5

Correct Answer: B 
The finance profile users are not required to enter a value in the primary segment field since the field is read-only in the field level security. Whenever a field is set to be mandatory in the page layout and it is a read-only field in the field level security settings, then the field level security will override the page layout and the field will be a read-only field. 
Option A is incorrect because field level security overrides the page layout, so the field is not a required field anymore. 
Option C is incorrect because a permission set gives additional access to users. It doesn’t force users to enter a value for any field. 
Option D is incorrect because a workflow rule is used to automate a certain business process. It is not used to make users enter a value in any field. 
References:

https://help.salesforce.com/articleView?id=customize_layoutoverview.htm&type=5

Correct Answer: B 
The finance profile users are not required to enter a value in the primary segment field since the field is read-only in the field level security. Whenever a field is set to be mandatory in the page layout and it is a read-only field in the field level security settings, then the field level security will override the page layout and the field will be a read-only field. 
Option A is incorrect because field level security overrides the page layout, so the field is not a required field anymore. 
Option C is incorrect because a permission set gives additional access to users. It doesn’t force users to enter a value for any field. 
Option D is incorrect because a workflow rule is used to automate a certain business process. It is not used to make users enter a value in any field. 
References:

https://help.salesforce.com/articleView?id=modifying_field_access_settings.htm&type=5