According to molecular orbital theory, the correct order of stability in the following species is

Stability ∝ Bond orderFor those species with same bond order, lesser the number of electrons in ABMO greater the stability.H2-σ1s2; B.O=2-02=1; H2+-σ1s1;B.O=1-02=0.5; H2--σ1s2σ1s*1; B.O=2-12=0.5;Since  H2+ contains less number of electrons in ABMO,  it is more stable than H2-