Does the sentence "Unlike Modern English, Old English is a language rich in morphological diversity." provide a valid answer to the question "What trait does Old English possess that Modern English lacks?"

A: yes

Does the sentence "On April 2, 1958, President Eisenhower reacted to the Soviet space lead in launching the first satellite, by recommending to the US Congress that a civilian agency be established to direct nonmilitary space activities." provide a valid answer to the question "The first US satellite was launched on what date?"

A: yes

Does the sentence "The energy consumption of the brain does not vary greatly over time, but active regions of the cerebral cortex consume somewhat more energy than inactive regions; this forms the basis for the functional brain imaging methods PET, fMRI, and NIRS." provide a valid answer to the question "Where does the brain usually get most of its energy from inside the body?"

A: no

Does the sentence "Also, by promising to vote for Joseph II in the Imperial elections, Frederick II accepted the Habsburg preeminence in the Holy Roman Empire." provide a valid answer to the question "Who did Frederick II promise to vote for in the imperial elections?"

A:
yes