The correct method to read a CSV file with a specified schema in Apache Spark is to use spark.read.schema(schema).csv(filePath). This is because the schema method expects a StructType object, not a string. Option C correctly uses the schema method with a StructType object and does not use parentheses around spark.read, which is the correct syntax in both Scala and Python. Option E also correctly uses the schema method with a StructType object but includes parentheses around spark.read, which is valid in Scala but not in Python. Since the question does not specify the language and provides 5 options, both C and E are considered correct for Scala, but only C is correct for Python. Given the context of the Databricks certification, which covers both languages, both options are provided as correct answers.