A common techerque used in tranapsotich ciphers is the "rail fonce' mathod, What does this involve?

Select one:

$2.$ Write the message in altarnating digonals across inea

b$.$ Creating a keyword to guide the letter rearrangements

c$.$ Substituthg vowala with cansonantes and vice verse.

d$.$ Divioing the message into equal$-$sized blocka and rearrenging them,