Final answer:
The highest point named La Soufriere is found in the country of Saint Vincent and the Grenadines, which is situated in the Lesser Antilles volcanic arc.
Step-by-step explanation:
The country whose highest point is La Soufriere is Saint Vincent and the Grenadines. La Soufriere is a stratovolcano located on the largest island of the country, also named Saint Vincent. Its most recent eruption was in April 2021, reminding us of the active geological landscape of the region which is part of the Lesser Antilles volcanic arc. This area is formed due to the subduction of the Atlantic plate beneath the Caribbean plate. It is worth noting that La Soufriere is not the same as La Grande Soufriere located on Guadeloupe or Soufriere Hills on Montserrat, which are also part of the Lesser Antilles but different volcanic peaks.