Option C: Line_
To determine the symbol on the face opposite to the one containing the cross, we need to understand the arrangement of symbols on a standard six-sided die. Typically, opposite faces on a die add up to seven. However, in this question, we are dealing with symbols rather than numbers. Assuming a similar logic applies, we need to identify the pattern or rule governing the placement of symbols. Given the options and the correct answer provided, the face opposite the cross is the one with the _Line_. This conclusion is based on the specific arrangement or rule implied in the question.