- The isotherms deviate to the north over the ocean and to the south over the continent.
- The presence of cold ocean currents, Gulf Stream and North Atlantic Drift make the North Atlantic Ocean colder and the isotherms bend towards the north.
Explanation
The correct inference from the provided statements is "1 only." In January, isotherms typically show a distinct pattern due to the continental and oceanic temperature contrasts, where they bend northwards over oceans due to warmer maritime air and southwards over land due to colder continental air masses. Conversely, the Gulf Stream and North Atlantic Drift generally warm the oceanic areas, which would not inherently make the North Atlantic colder by the influence of cold ocean currents; thus, the second statement is misleading in its implication about the ocean's temperature behavior. This understanding aligns with climatological principles regarding the interaction between land and sea during winter as covered in standard UPSC references.