To filter rows in a Spark DataFrame based on a condition, thefiltermethod is used. In this case, the condition is that the value in the "discount" column should be less than or equal to 0. The correct syntax uses thefiltermethod along with thecolfunction frompyspark.sql.functions.

Correct code:

frompyspark.sql.functionsimportcol filtered_df = spark_df.filter(col("discount") <=0)

Option A and D use Pandas syntax, which is not applicable in PySpark. Option B is closer but misses the use of thecolfunction.

References:

PySpark SQL Documentation