Final answer:
Although the correct type of swab for medical use is not explicitly given, the application would determine the choice, typically with a preference for non-reactive materials. For microbial control on living tissues, the suitable option is an antiseptic.
Step-by-step explanation:
The subject of the first question pertains to the type of swabs used in healthcare settings for cleaning recessed areas and applying medications and lubricants. The correct answer to the question of which type of swab should be used - Cotton, Polyester, Nylon, or Rayon - is not provided in the information. However, the passage given about polyester highlights its use in various applications due to its durability and stain resistance. In a medical context, it's common to use swabs with tips made of materials that will not react with or degrade due to the substances they are intended to deliver or the environments where they are used.
The second question asks which option is suitable for use on tissues for microbial control to prevent infection. The answer is antiseptic, as antiseptics are specifically formulated to be safe for use on living tissues to reduce the possibility of infection, in contrast to disinfectants, which are typically used on surfaces, and sterilants, which are used for complete sterilization of non-living objects.