My guess would be the first one , Hope it’s the correct answer !
The kelvin is the primary unit of temperature measurement in the physical sciences, but is often used in conjunction with the degree Celsius, which has the same magnitude. The definition implies that absolute zero (0 K) is equivalent to −273.15 °C (−459.67 °F).
Cheetah need a large lung capacity because they consume a lot of oxygen while sprinting.
The most effective way to combine sentences (5) and (6) will be; He started a new league called the All-American Girls Professional Baseball League (AAGPBL).