Article: Innovation and Technology: A Panacea to Teaching and Learning Challenges during the Covid$-19$ Lockdown in South Africa$]$ What are the extra obstacles faced by students from low and middle$-$income families in online learning? $($p$.74)$

a$.$

Lack of availability of online learning resources

b$.$

Insufficient workspace and quiet study locations at home

c$.$

High data costs, internet connectivity and unreliable power supply

d$.$

Difficulty in understanding instructional goals in online courses