$\"\"$ \ \

Observe the table : \ \

$\"\"$ , $\"\"$ and $\"\"$ . \ \

The common difference factor is

$\"\"$ . \ \

The explicit formula for $\"\"$ th term of the sequence is $\"\"$ . \ \

Substitute $\"\"$ and $\"\"$ . \ \

$\"\"$

Hence, the explicit formula for $\"\"$ th term of the sequence is $\"\"$ .

Therefore, the option $\"\"$ is the correct choice.

$\"\"$

The option $\"\"$ is the correct choice.