Q:

The statement that best describes the linguistic concept of words is

• 1
  words are inherent units of meaning that every child is born with,and learns to attach specific sounds to specific words
• 2
  words are sounds that we only attach meaning to through the context of syntax, and are by themselves devoid of useful information
• 3
  words are written pieces of language that are defined via long-cultural consensus, and term recorded in dictionaries to main-uniformity of expression, without which words would be arbitrary and meaningless
• 4
  words are arbitrary sounds that are memorized through brute force and are associated in the mental lexicon with the word itself, its sound, and its meaning