Final answer:
The NTD ensured a large audience at their first productions through the introduction of low-cost tickets, special effects, audience participation, machinery, and significant cuts in the script.
Step-by-step explanation:
The NTD (National Theatre of the Deaf) ensured a large audience at their first productions through various strategies. One of the most significant strategies was the introduction of low-cost tickets. For example, during the initial run of the musical RENT, the first two rows of seats were priced at $20 and became available at 6:00 p.m. on the night of the performance. This attracted a dedicated fan base, known as 'Rent-heads,' who would camp out for hours or even overnight to secure a ticket. The NTD also employed different techniques like special effects, such as lighting and sound, to enhance the audience's experience. Additionally, audience participation, machinery, and significant cuts in the script may have been used to create a unique and engaging production.