Pseudostratified epithelium appears multilayered because:
Correct option is C, Nuclei are present at different levels. In Tissue-I, the accurate description is Nuclei are present at different levels, and that is what you should commit to memory. Keep the definition tight and the role clear — cause and effect line up with Nuclei are present at different levels — that is the mechanism or reason the stem is pointing to. Then Nuclei are present at different levels is the answer you can defend. Check yourself by covering the options and writing the answer first, then matching the letter — that builds confidence. If the wording feels dense, translate it in
Ref: Animal physiology is Unit 7 of the CSIR NET Life Science Syllabus, covering core body systems. It accounts for roughly 10% of the total marks in Sections B and C.