Correct Option (1)
Assumption 1 is valid. The passage states that parental solicitude is "often a disguise for love of power," indicating a tendency towards dominance. Furthermore, it mentions that parents' expressed opinions are "dogmatic," leading adolescents to "seldom confide in them" and "usually go their own way in secret." This directly supports the inference that adolescents feel uncomfortable due to their parents' dominating and assertive nature.
Incorrect Options:
Assumption 2 is not valid. The passage describes conflict, parental dogmatism, and adolescents' tendency to keep matters secret. However, it does not provide any information to suggest that adolescents lack respect for their parents. The conflict arises from differing views on managing affairs and parental assertiveness, not from a general disrespect. The phrase "modern times" is also not referenced in the passage.
Therefore:
- Option 2 is incorrect because Assumption 2 is not supported by the passage.
- Option 3 is incorrect because Assumption 2 is invalid.
- Option 4 is incorrect because Assumption 1 is valid.