What is the term for an asterisk (*) being used to replace a letter or group of letters?
a. a truncation
b. a wildcard
c. boolean logic
d. bias

As for this problem which tackles on the usage of asterisk, the most probable and the most likely answer to this, taking into consideration the options presented as possible answer, would be B. a wild card.

A wild card is the term for an asterisk or known in signs as * being used to replace a letter or group of letter, more or less words and phrases. This has been popularly used in instant messaging and other forms of communication, but more on instant messaging. This is to inform the receiver or the reader that there was an error and this is a way of correcting the error made.

B.) a wildcard

Is the answer

LH production!
 (EXTRA LETTERS)