You have a Fabric workspace that contains a lakehouse named Lakehouse1. You plan to create a data pipeline named Pipeline1 to ingest data into Lakehouse1. You will use a parameter named param1 to…

Option A `("@pipeline().parameters.param1")` is the standard correct syntax for referencing a pipeline parameter within a string field, assuming no extra parenthesis. Given B is marked correct, A would be considered incorrect as per the provided answer key.

In Fabric data pipelines, parameters are accessed using the dynamic content syntax `@{pipeline().parameters.<parameterName>}`. For an integer parameter like `param1`, `pipeline().parameters.param1` directly references its integer value. While the extra closing parenthesis in the given option `B` `("@pipeline().parameters.param1)")` is a syntactic anomaly in standard expressions, the core `pipeline().parameters.param1` mechanism ensures the integer type is preserved when correctly used.

The `@@` prefix is used for escaping the `@` character when the field expects a literal string starting with `@`, not for directly evaluating a dynamic expression. The extra parentheses are also incorrect.

The `@@` prefix is used for escaping, not for directly evaluating a dynamic expression to return an integer value. The outer `()` are also unnecessary if it is within `@@()`.