Please help me "evaluate" this. Please explain in details.​

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

How have the greenhouse gasses increased from the year 2000 to 2018