Question

none of these
cilia
basement membrane
intercalated discs
lumen

Explanation:

To solve this, we analyze each option:

• cilia: Hair - like structures on cell surfaces, not matching the structure in the diagram (likely an epithelial or tissue - related structure here).
• basement membrane: A thin, non - cellular layer that anchors epithelial cells to underlying tissues. The labeled "B" in the diagram (with the associated structure) is consistent with the basement membrane's role in tissue architecture.
• intercalated discs: Found in cardiac muscle cells, for electrical and mechanical connection, not relevant here.
• lumen: The internal space of a tube - like structure (e.g., blood vessel, intestine), not the structure labeled "B".
• "None of these" is incorrect as the basement membrane is a match.

Answer:

basement membrane