Widely spaced isobars on a weather map indicate __________.

Correct Answer: Option C — gentle breezes

Isobars represent lines of constant atmospheric pressure. According to meteorological principles in Bowditch, the pressure gradient force is proportional to the spacing of these lines. Widely spaced isobars indicate a weak pressure gradient, resulting in light, gentle breezes, whereas closely spaced isobars indicate high winds and strong pressure gradients.