The question requires matching the types of tides (List-I) with their corresponding characteristics (List-II).

Tide Matching Solution

Let's analyze each item:

• A. Spring Tides: These are the highest tides and occur when the Sun, Moon, and Earth are aligned in a straight line (syzygy), which happens during new moon and full moon phases. This alignment maximizes their combined gravitational pull. Characteristic 4, "Very high tides caused when the Sun, Moon and Earth are almost in the same line", accurately describes spring tides. Thus, A matches with 4.
• B. Neap Tides: These are the lowest tides and occur when the Sun and Moon are at right angles to each other relative to the Earth (quadrature). This happens during the first and third quarter moon phases. Their gravitational forces partially counteract each other. Characteristic 1, "Low tides caused when the Sun, Earth and Moon are in the position of quadrature", defines neap tides. Thus, B matches with 1.
• C. Apogean Tides: Tides are affected by the Moon's orbital distance. Apogee is the point in the Moon's orbit farthest from Earth. When the Moon is at apogee, its gravitational influence is weakest, leading to lower than average tides (apogean tides). Characteristic 2, "Occur when the Moon is the farthest from the Earth", correctly identifies the condition for apogean tides. Thus, C matches with 2.
• D. Equinoctial Spring Tides: These are exceptionally high spring tides that occur twice a year, around the March and September equinoxes. During equinoxes, the Sun is directly over the equator, enhancing its gravitational pull on Earth. Characteristic 3, "Tides recurring at an interval of six months", relates to the timing of equinoxes, which occur approximately every six months. Thus, D matches with 3.

Final Matching Code

Based on the analysis, the correct matching is:

• A - 4
• B - 1
• C - 2
• D - 3

This corresponds to option 4 in the codes provided.