Questions

Let the required number of bottles be x.

More weavers, More mats (Direct Proportion)

More days, More mats (Direct Proportion)

$$\begin{gathered} Wavers 4:8 \\ Days 4:8 \end{gathered}$$  :: 4:x

 4 x 4 x x = 8 x 8 x 4

=> x= 8*8*44*4

=>  x = 16.

Sharjah, the city of United Arab Emirates (UAE), has been designated as the UNESCO World Book Capital 2019 by Irina Bokova, the Director-General of UNESCO, at the Headquarters of the International Federation of Library Associations (IFLA) at La Haye. The honour is in recognition of the Emirate’s pioneering role in supporting and expanding the local and regional publishing industries, promoting reading to become an intrinsic cultural practice, as well as embracing inter-cultural, knowledge-based dialogue. Sharjah was the first emirate in UAE to establish a formal school and a library. It was also the first emirate to house many cultural institutions like the Emirates Publishers Association and the Emirates’ writers Union. Sharjah is the 19th city to become World Book Capital. It is preceded by Conakry in 2017 and Athens in 2018.

The other answers could be accurate in specific situations, but their role alone does not meet the keyb criterion of being "external" to the project team. Answers A, B, and D are incorrect because these individuals are not external to the project.