Match List-I with List-II

List-I (Parameter)	List-II (Unit)
[a] Relative Humidity	(I) Okta
[b] Temperature	(II) km/hr
[c] Wind Speed	(III) °C
[d] Cloud cover	(IV) %

Choose the correct answer from the options given below:

Correct option is B

Correct matching: Option (b)
[a]-(IV), [b]-(III), [c]-(II), [d]-(I)
Explanations:
· Relative Humidity → % (IV): Expressed as percentage of saturation.
· Temperature → °C (III): Standard meteorological temperature unit.
· Wind Speed → km/hr (II): Common speed unit in weather observations.
· Cloud cover → Okta (I): Measured on an 8-part scale (0–8 oktas).
❌ Why other options are incorrect
· They mismatch standard meteorological units (e.g., cloud cover is not % in synoptic reporting; it’s oktas).
Key Points
· Okta scale quantifies sky cover.
· RH is always a percentage.
· Wind speed units vary by convention; km/hr is standard in many reports.