Question 8

Read the following text to answer the question!

$(1)$ The impact of the Covid-19 outbreak on the world economy is also very devastating. $(2)$ In the first quarter of $2020$, economic growth in several of Indonesia's trading partner countries grew negatively, such as: Singapore $-2.2$, Hong Kong $-8.9$, the European Union $-2.7$, and China experienced a decline of up to minus $6.8$. $(3)$ Some countries still grew positively, but declined compared to the previous quarter. $(4)$ The United States fell from $2.3$ to $0.3$, South Korea from $2.3$ to $1.3$, and Vietnam from $6.8$ to $3.8$. $(5)$ Indonesia experienced a quite deep contraction from $4.97$ in the 4th quarter of $2019$ to growing only $2.97$ in the first quarter of $2020$. $(6)$ This quite deep contraction in the 1st quarter in Indonesia is unexpected considering that physical distancing regulations and PSBB began to be implemented at the beginning of April $2020$.

Source: kompas.com.

Consider the following sentence!

PSBB began to be implemented.

The appropriate expansion for that basic sentence is ....