None of the above. It is called an Echocardiogram.
The nearest exoplanet is Proxima Centauri b,located 4.2 light years from Earth and orbiting Proxima Centauri, closest star to the sun.
The principal of falsifiability would be correct.
The dopamine hypothesis of schizophrenia is
a structure, accrediting indications of schizophrenia to a distressed and agitated dopaminergic indicator
transduction. The growth of enriched antipsychotic medicines was directed by a hunt
for dopamine blockers founded on the notion that schizophrenia is, partly, a
hyperdopaminergic state. So from the choices given above, it can be concluded
that, drugs that block the effects of dopamine in the brain reduce or eliminate
symptoms of schizophrenia.