Question

what was an immediate cause of the invention of a tape dispenser with a serrated cutting edge?
richard drew used crepe paper as backing for masking tape.
waterproof cellophane was developed.
the tape was extremely challenging to get off the roll.
the company was building a laboratory for quality control.

Explanation:

La causa inmediata de la invención de un dispensador de cinta con un borde de corte dentado fue que la cinta era extremadamente difícil de sacar del rollo. Esto creó la necesidad de una solución práctica para cortar la cinta fácilmente.

Answer:

The tape was extremely challenging to get off the roll.