To solve this problem, we need to identify the type of roots that originate from the base of the stem. Let's analyze each option:$\newline \bullet$Primary roots:$\newline$ - These are the main roots that develop from the radicle of the seed. They are not typically found originating from the base of the stem.$\newline \bullet$Prop roots:$\newline$ - These are adventitious roots that provide additional support to the plant. They usually grow from the stem or branches, not specifically from the base of the stem.$\newline \bullet$Lateral roots:$\newline$ - These roots branch out from the primary root and are not directly originating from the base of the stem.$\newline \bullet$Fibrous roots:$\newline$ - These roots form a dense network of roots that originate from the base of the stem. They are characteristic of monocotyledonous plants.$\newline$Based on the analysis, the roots that originate from the base of the stem are fibrous roots.$\newline$Therefore, the correct option is Option 4: Fibrous roots.