The correct answer is B) Several various-sized sealing clamps. In an inflatable liferaft, sealing clamps are provided to allow for quick, temporary repairs to large holes or punctures in the raft. These clamps can be easily and quickly applied to the damaged area to seal the hole and prevent air loss, allowing the liferaft to remain inflated and usable until more permanent repairs can be made. The other answer choices are incorrect because: A) Glue and rubber patches would not provide an effective temporary seal for large holes, C) No equipment would not allow for any emergency repairs, and D) Self-adhesive patches may not adhere well enough to provide a secure, temporary fix for significant damage.