Add a multiple choice exercise

You can add multiple choice exercises inside Markdown cells using this syntax (explained below).

::::{multiplechoice}

:::{prompt}
Which of the following are frequently used as _activation functions_ in neural networks?
Recall the [definition of activation function](<https://en.wikipedia.org/wiki/Activation_function>).
:::

:::{option}
$\\sin$
:::

:::{option} correct
$\\tanh$
:::

:::{option*}
`sigmoid` (aka $\\sigma$)
:::

:::{option}
`relu`
:::

::::

The ::::{multiplechoice} bit starts the multiple choice exercise. Everything between that line and the closing :::: is part of the multiple choice exercise.
- Note that we use four colons (::::) because the inner directives use three colons (:::).
The :::{prompt} directive is required and can contain arbitrary Markdown text.
Each :::{option} defines a possible choice for the exercise and can contain arbitrary Markdown text.
- We can use :::{option*} or :::{option} correct to indicate that the choice is correct (i.e., it should be selected by the student to allow them to pass).

Add a free-response exercise

<aside> 🚧 Coming soon!

</aside>

Add an auto-graded exercise

<aside> 🚧 Coming soon!

</aside>

Next steps

For a more detailed explanation of the authoring syntax, see the Codex syntax reference reference material.