Both of these instruments can measure wind speed

a. doppler radar and psychrometer

b. anemometer and hygrometer

c. doppler radar and anemometer

d. radiosonde and psychrometer

i believe the answer is B

The right option is; c. doppler radar and anemometer

Both doppler radar and anemometer can measure wind speed

Doppler radar is a special radar that uses the Doppler effect to measure the speed of a moving object. Doppler radar can also measure wind speed and record wind data along with rainfall intensity.

Anemometer is an instrument used for measuring and recording wind speed. Anemometer can also indicate the direction of the wind.