a) size
b) text
c) name
d) maxlength

Answer: a
Explanation: size attribute denotes the width of text input i.e measured by the number of characters inputted. E.g. If we input value 3 then it will create a box of width enough to display three characters. The user can enter more characters if they want. Syntax is <input type=”text” name=”firstname” size=”12” maxlength=”30”>