The suitable method of geography teaching is

Geography teaching is judged by how directly it lets learners engage with real physical and human phenomena -- landforms, climate, vegetation, resources, and settlement patterns -- rather than only with verbal or narrative description.

Among the given methods, the Tour method (also called the Field Trip or Excursion method) takes learners out of the classroom to directly observe geographical features on the ground -- rivers, landforms, land use, climate effects -- which is exactly the environmental engagement geography teaching needs.

• Story method: builds narrative interest and imagination through storytelling, but stays classroom-based rather than exposing learners to actual physical features on the ground.

• Discussion method: works through verbal exchange and debate of existing knowledge and opinions among learners, depending on what they already know rather than adding firsthand exposure to real places.

• Tour method (Field Trip): takes learners directly into the field to observe landforms, climate effects, and land use firsthand -- matching geography's observational, spatial nature.

• None of these: incorrect, since a widely recommended, standard method for teaching geography is included among the given options.

This matches standard teacher-education pedagogy (e.g. NCERT and IGNOU B.Ed. material on subject-specific teaching methods), which recommends field trips/excursions specifically for geography because they connect classroom concepts to real spatial observation -- confirming the Tour method (Field Trip) as the suitable method.