Final answer:
The correct answer is masking tape, as it does not leave residue and is gentle on exposed film compared to other types of tape such as transparent, adhesive, or duct tape which have stronger adhesives.
Step-by-step explanation:
The correct answer to the question "Always warp exposed film with ____ tape?" is masking tape. Masking tape is specifically designed to be easy to remove and doesn't leave a sticky residue, which is ideal for protecting the vulnerable surface of exposed film. It's typically used in painting to mask off areas that should not be painted.
The other options, such as transparent, adhesive, or duct tape, can potentially damage the film due to their stronger adhesive properties and make it difficult to remove without leaving a residue or tearing the film.
Always warp exposed film with transparent tape.
Therefore answer is 1) transparent.