Answer:
The word used to begin a conditional statement is if.
Step-by-step explanation:
In the syntaxes of most (if not all) programming languages, the word if is used to begin any conditional statement.
Take for instance:
Python:
if a == b:
print("Equal")
C++:
if(a == b)
cout<<"Equal";
Java:
if(a==b)
System.out.print("Equal")
The above code segments in Python, C++ and Java represents how conditional statements are used, and they all have a similarity, which is the "if" word