Which of the following describes a Splunk custom visualization?

Searching "index=_internal metrics | head 3" from Splunk Web returned the following events:
04-12-2018 18:39:43.514 +0200 INFO Metrics - group=thruput, name=thruput, instantaneous_kbps=0.9651774014563425, instantaneous_eps=5.645638802094809, average_kbps=1.198995639527069, total_k_processed=2676, kb=29.91796875, ev=175, load_average=3.85888671875
04-12-2018 18:39:43.514 +0200 INFO Metrics - group_thruput, name_syslog_output, instantaneous_kbps=0, instantaneous_eps_0, average_kbps=0, total_k_processed=0, kb=0, ev=0
04-12-2018 18:39:43.513 +0200 INFO Metrics - group_thruput, name_index_thruput, instantaneous_kbps=0.9651773703189551, instantaneous_eps=4.87137960922438, average_kbps=1.1985932324065556, total_k_processed=2675, kb=29.91796875, ev=151 When the same search is required from a REST API call, which fields will be given? (Select all that apply.)

Which Splunk REST endpoint is used to create a KV store collection?

Which of these URLs could be used to construct a REST request to search the employee KV store collection to find records with a rating greater than or equal to 2 and less than 5?

Using Splunk Web to modify config settings for a shared object, a revised config file with those changes is placed in which directory?