Questão número 637771

Mark the only option in which the word(s) in bold type expresses an idea of obligation/necessity:

• A.

  "… the constant increase in air traffic can be accommodated …" (lines 11-12).

• B.

  "…solutions must be found elsewhere, and with the relevant parties." (lines 33-34)

• C.

  "Some elements of airport operations may be under the control of the State, ..." (lines 37-38).

• D.

  "EUROCONTROL is going to help them to do this, ..." (lines 49-50).

• E.

  "The 'Airports' pages of the EUROCONTROL website will give you…" (lines 51-52).