People can be better monitor their drinks by:
a. asking how much alcohol is in each drink
b. never leaving a drink unattended
c. pouring each drink themselves
d. all of the above

Option a and c

Explanation:

In order to regulate the amount of alcohols in the drinks that people intake they need to be aware of the amount of alcohol in their drinks that how much concentration of the alcohol they are consuming.

They can ensure this by asking the that how much alcohol a drink contains.

Secondly, They can regulate the amount of alcohol intake by pouring their drinks on their own.

Option D

Explanation:

People can monitor their drinks. This is done in order to avoid over drinking which causes problems in the body sooner or later.

Over drinking should be avoid and there are some ways by which one can have a monitor on drinks they are having.

The person can ask for the amount of alcohol in the drink. Else he can also pour the drink by his own so that he knows the amount of alcohol in the drink.

The people should also have a regular check on the drink kept so that one should not add something into it.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

i think the answer is b.