Answer to Question 1
e.
This statement is not true. Neutron stars are not necessarily known to absorb neutrinos, the light, non-charged particles produced in some nuclear reactions. Instead, they are known to emit neutrinos as electrons and protons fuse to form neutrons and an electron neutrino.
Answer to Question 2
a. Weber first claimed to detect gravitational waves in 1968, but his experiment was not confirmed.