Rationale

B is correct: 'Contiguous' means touching or sharing a common boundary. In clinical settings it is used to describe anatomical structures that are adjacent (e.g., 'the lesion extends to contiguous lymph nodes'). A is incorrect: 'Contagious' (spread by contact or droplet) is a different word; this is a common mix-up but an incorrect meaning. C is incorrect: 'Continuous' describes something without interruption; 'contiguous' refers to spatial adjacency, not temporal continuity. D is incorrect: No relationship to connective tissue; this is an invented distractor.

Key concepts