Explanation

Alveolar consonants are made when the tongue tip touches the gum ridge. The sound [d] is made this way. Your tongue touches behind your upper teeth.

The gum ridge (alveolar ridge) is the bumpy area behind your top front teeth. Many sounds use this position. [t], [d], [n], [l], and [s] are all alveolar.

Knowing articulation points helps you make clear sounds. The alveolar ridge is one of the most common speech positions.