€‹ which of the following html attributes is used to create a single cell that occupies more than one cell from a series of horizontal cells?

Rowspan is the correct answer for the above question.

Explanation:

'Rowspan' is an attribute of an HTML that is used to define how much a row of a table takes space. when a user wants to create a row that takes much space of any horizontal cell then he needs to define the property of Rowspan for that row. The 'Rowspan' attributes will use like this--

<TR><TD Rowspan="5"> content of a row </TD><TR>

where <TR> is a symbol to open the column tag, <TD> is a symbol which is used to open the row tag and </TR> is a symbol to close the column tag, </TD> is a symbol which is used to close the row tag.The above question asked a property through which a row can take more space then the property is 'Rowspan' which a user needs to define on the row tag which is described above.

the only way i would see could be an autoclicker type software. but that is very time consuming.