Correct Answer: B

Rationale: Opsonization is a process in the immune response where opsonins, which are proteins such as antibodies and complement proteins, bind to pathogens such as bacteria, making them more easily recognized and engulfed by phagocytic cells like macrophages and neutrophils. This coating of pathogens by opsonins enhances the efficiency of phagocytosis, helping in the elimination of pathogens from the body. Opsonins do not facilitate cell lysis, neutralize toxins, or stimulate histamine release; their main function is to tag pathogens for phagocytosis.

Correct Answer: D

Rationale: A hard mass and a reddened area on one breast are key clinical signs that confirm the diagnosis of mastitis. Mastitis is an infection of the breast tissue that often presents with localized redness, warmth, and swelling of the breast. The presence of a hard mass along with the other symptoms suggests inflammation and infection within the breast tissue. In contrast, the other findings such as enlarged glands in the axilla, normal temperature, and engorged breasts are not specific findings for mastitis and may be present in other conditions. Therefore, the presence of a hard mass and reddened area on one breast is the additional finding that strongly confirms the diagnosis of mastitis in this case.

Correct Answer: C

Rationale: Nurse Gina has to consider that most of the elderly are dependent on others financially. This is an important factor to take into account when planning and providing care for elderly patients. Many elderly individuals rely on financial assistance from family members, government programs, or retirement funds. Understanding the financial status of elderly patients helps nurses like Gina provide adequate care and support to meet their needs effectively. This can involve coordinating with social services or financial assistance programs to ensure that the patients' financial concerns are addressed along with their healthcare needs.

Correct Answer: B

Rationale: Gingivitis is a dental condition characterized by inflammation and bleeding of the gingival tissues. It is often caused by poor oral hygiene leading to the accumulation of bacterial plaque along the gumline. The plaque contains bacteria that release toxins, leading to inflammation of the gums. If left untreated, gingivitis can progress to periodontitis, a more serious condition that affects the supporting structures of the teeth. Regular dental cleanings, proper oral hygiene practices, and professional treatment can help manage and prevent gingivitis.

Correct Answer: A

Rationale: Stressing to all participants attending a health fair that a screening program is not a substitute for ongoing health supervision from a healthcare provider is crucial for several reasons. Health fairs are intended to provide a snapshot of an individual's health at a specific point in time and are not comprehensive assessments. Participants need to understand that these screenings are not a replacement for regular check-ups with their healthcare provider, who can provide continued monitoring, follow-up care, and more in-depth evaluations if necessary. It's important for participants to recognize that the results from a health fair screening are just one piece of their overall health picture and that ongoing care from a healthcare provider is essential for maintaining their well-being.