In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Question: Which of the following characteristics defines an endogenous depression?
Options: <1> Its course is continuous. <2> There is an evening worsening. <3> There is an early awakening. <4> There is a good response to placebo. <5> A neurotic personality intervenes in the etiopathogenesis.
3

Question: GnRH (ganodorelin) is a hypothalamic decapeptide that is secreted in a pulsatile manner. Lately a series of analogues have been developed that:
Options: <1> All of them inhibit prolonged secretion of LH and FSH. <2> All of them are GnRH receptor agonists. <3> Goserelin and buserelin are antagonists of the GnRH receptor. <4> The prolonged treatment gives rise to a typical symptomatology of an excess of gonadal steroids. <5> GnRH agonists are contraindicated in prostate and breast cancer.
1

Question: Gallium is the element that is under the aluminum in group 13 of the periodic table. Thus:
Options: <1> It burns in oxygen giving Ga2O. <2> It is stable to air due to a protective oxide layer. <3> It dissolves very quickly in nitric acid. <4> It is not soluble in basic water with hydrogen evolution. <5> It has a melting point a little higher than aluminum.
2