Because ocean is warm off the “Texas coast”, but a “cold current” running “offshore California” generates “fog” when the “cold”, “moist air” is drawn ashore by a “sea breeze”.
Option: B
Explanation:
Coastal California is famous for fog and smog as the Pacific Ocean participate in the frequency of fog by catering atmospheric moisture and with the help of its temperature. “The prevailing current” flows from the “northwest” along California coast and in the “North Pacific” its origin is cooled. For “condensation” of “moisture” from “vapor” into “cloud droplets”. Pacific Ocean is an important source of nuclei. As Houston and Texas cities lie at similar latitude and might get smog occasionally but fog is rare because “ocean” is “warm” off the “Texas coast”.