Answer: How often the base table changes, Whether the materialized view has a cluster key defined

The correct answers are C and D. According to Snowflake documentation and the community consensus (with CD receiving 96% support), credit consumption for maintaining materialized views is primarily influenced by: (C) How often the base table changes - each change triggers background maintenance that consumes compute resources, and (D) Whether the materialized view has a cluster key defined - maintaining clustering adds additional costs. Option E (how often the materialized view is queried) is incorrect because querying doesn't impact maintenance costs; it only affects query execution costs. Option B (how often the underlying base table is queried) is irrelevant to maintenance costs. Option A (whether it's a secure view) doesn't affect maintenance credit consumption.

Author: LeetQuiz Editorial Team