Final answer:
The measure of angle ZZTB is approximately 31.1 degrees based on the provided information, making the closest option b) 31°.
Step-by-step explanation:
The problem seems to involve finding the measure of an angle, represented as mZZTB. Based on the reference information provided, there's a calculation that relates to the angle measure: 20₁ = (2)(14.5°) = 29°, 0₂ − 0₁ = 30.05° — 14.5° = 15.56°. Thus, 29° ≈ (2)(15.56°) = 31.1º. So, despite the various angle measures given in the references, it appears the most relevant calculation determines the angle to be approximately 31.1°. Hence, the closest answer would be b) 31°.