Final answer:
VHS outsold Betamax primarily because it offered more tape space, allowing for longer recording times, which was a major convenience for consumers. Other unlisted factors also played a role in VHS's market dominance.
Step-by-step explanation:
The technically superior Betamax videocassette format was outsold by VHS for several reasons, and among the choices provided, option B) 'VHS offered more tape space and could record longer programs' is a significant factor. The longer recording time of VHS tapes was a key selling point for consumers who wanted to record and watch longer programs without interruption. While Betamax was known for its slightly better picture quality, the convenience of longer recording times outweighed this advantage for most consumers. Other factors contributing to VHS's success, which are not listed among the provided options, include the format's widespread adoption by rental stores and VHS recorder manufacturers' aggressive marketing strategies.