In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

Rio Ferdinand believes Louis van Gaal's decision to return Wayne Rooney to his favoured attacking role has led to the Manchester United's upturn in performance levels. Writing in his column in The Sun ahead of the Manchester derby on Sunday, Ferdinand, now at Queens Park Rangers, revealed his belief that Rooney playing as a striker is fundamental to United hitting fifth gear. He praised Van Gaal for moving his captain further up the field after a spell in the centre of the pitch at the start of the year but admitted the return to form and fitness of Ander Herrera, Marouane Fellaini and Michael Carrick has also been important.Rio Ferdinand says Manchester United need Wayne Rooney in attackHe believes Rooney's form has been key to their upturn in performancesFerdinand said United's 2-1 win at Anfield shows they are 'on to something'Manchester United vs Manchester United: The expert view of the derbyCLICK HERE for all the latest Manchester United news 
 Question:Ferdinand also pointed to the return of midfield player Michael Carrick (left) as a help to _.
Manchester United

A British schoolboy who lost three family members in the Tunisian beach massacre has returned home with his mother. Owen Richards, 16, suffered a shoulder injury in the massacre after a bullet grazed him before going on to hit his uncle Adrian Evans, 49, in the head. The teenager's brother Joel Richards, 19, and their grandfather Charles Patrick Evans, 78, were also killed by the gunman. There was no answer at the door to his home in Wednesbury, West Midlands, but family members and friends could be seen going in and out of the semi-detached house after he arrived early this morning.Beach massacre survivor Owen Richards, 16, has returned home to BritainSchoolboy reunited with his mother after watching family members dieFelt bullet graze his shoulder before hitting uncle Adrian, 49, in the headOwen fled as brother Joel, 19, and grandfather Charles, 73, were also shot 
 Question:When _ was later found by a medic he was ‘shaking and crying’ and he said simply: ‘I have to call my mum.’
Owen Richards

(CNN) If you're a man who travels to an area with active Zika transmission, you should wait at least six months after exposure to have unprotected sex or try to conceive a baby, the Centers for Disease Control and Prevention announced Friday, even if you never had symptoms of the virus. Women should wait a full eight weeks after exposure. "The time frames now match, whether you are trying to prevent sexual transmission or protect pregnancy," said Dr. Denise Jamieson, chief of the CDC's Women's Health and Fertility Branch. "We are making it simple." The World Health Organization issued similar guidelines in early September, but its advice went further, recommending that women as well as men wait a full six months to conceive a baby or practice unprotected sex.CDC says men must wait six months for unprotected sex, even with no Zika symptomsWomen should use safe sex for at least eight weeksWHO guidelines go further and suggest women use protection for 6 months 
 Question:"Given that limited data are available," said the _ guidance, "some couples in which a partner had possible Zika virus exposure might choose to wait longer or shorter than the recommended time period to conceive, depending on individual circumstances (maternal age, fertility, details of possible exposure) and risk tolerance."

CDC