Answer:
Familiar.
Explanation:
As per the psychological observations, one is likely to be most drunk when he/she drinks a 'familiar drink' which is based on the condition that 'if each drink holds the equal proportion of alcohol and if the person takes a drink at the same rate.' The fundamental reason behind this is that the person would show a preferential behavior or response towards his/her 'familiar/preferred drink' and therefore, the rate of intake would increase and thus, the person would get drunk.
