Final answer:
When point H is on the interior of angle TEX, it means that the measures of angles TEH and HEX add up to the measure of angle TEX, making option B the correct conclusion.
Step-by-step explanation:
Based on the information that point H is on the interior of Á TEX, we can conclude option B: m < TEH + m < HEX = m < TEX. This is because when a point is inside an angle, it creates two smaller angles adjacent to each other whose measures add up to the measure of the larger angle. There is not enough information to conclude option A, C, or D.