Which is least effective for artificial transmutation?

$_{89}Ac^{231}$ gives $_{82}Pb^{207}$ after the emission of some $\alpha$ and $\beta$ particles. The number of such $\alpha$ and $\beta$ particles are respectively:

In the following nuclear reactions $_7N^{14} + _2He^4 \to _8O^{17} + X_1$ and $_{13}Al^{27} + _1D^2 \to _{14}Si^{28} + X_2$,$X_1$ and $X_2$ are respectively:

$_{13}Al^{28}$ when radiated by a suitable projectile gives $_{15}P^{31}$ and a neutron. The projectile used is:

For the fission reaction $_{92}U^{235} + _0n^1 \to _{56}Ba^{140} + _yE^x + 2_0n^1$,the values of $x$ and $y$ are:

$_1H^2 + _1H^2 \to _2He^3 + _0n^1$. The above nuclear reaction is called: