表数据单元格可能包含在HTML中的项目

Probably quite a basic question but i am revising for an exam and i am going over past papers and i have come across a question which i am not 100% sure about... (the reason im asking here is due to answers are not given out... :|... and also i always get helpful and awesome answers on Stackoverflow :D)Probably quite a basic question but i am revisi